Positive Behaviour Support strategies: Why new habits take longer than 21 days

Positive behaviour support strategies work by building new habits: changing the cues around a person, teaching an easier replacement skill, and rewarding it consistently. In a well-known study published in the European Journal of Social Psychology, a new everyday habit took a typical person around 66 days to feel automatic, and between 18 and 254 days across individuals, so the popular 21-day rule is a myth. That means slow progress is usually normal, not a sign that a plan is failing.

Week one felt hopeful. The new morning routine was on the fridge, everyone had agreed to it, and for a few days it worked.

By week three, the old pattern crept back. Someone was tired, the bus came early, and the routine slipped.

If that sounds familiar, you are not doing it wrong. Many families we meet quietly wonder whether the plan has failed, when the habit simply hasn’t had enough time yet.

Families often ask us a simple question: What positive behaviour support strategies work, and why do they take so long?

In this post, we look at how long new habits really take and why that matters when you put positive behaviour support strategies into daily life.

Why Positive Behaviour Support strategies need more than 21 days

You have probably heard that it takes 21 days to form a habit. That is a myth, and a persuasive one, because three weeks sounds achievable.

The research tells a different story. In the study (Lally et al., 2010), 96 volunteers each chose an eating, drinking, or activity habit, linked it to a daily cue (such as after breakfast), and rated how automatic it felt over 12 weeks.

For a typical person, the habit took around 66 days to feel automatic. Among the volunteers whose results could be modelled, it ranged from 18 days to 254 days. The longer figures were estimates, because some people were still improving when the study ended.

That is a wide spread. Some people were quick. Others needed many months.

What ‘around 66 days’ means

A single number can hide a lot. ‘Around 66 days’ describes a typical person, not a deadline. Some people got there much earlier, and some took far longer. If your family is at day 40 and it still feels hard, you are well within the normal range.

One caution. The study looked at everyday health habits, not behaviours of concern or disability support, so we treat it as a helpful lens rather than proof. It fits how we plan positive behaviour support, though: change takes repetition, in a steady setting, with clear cues and rewards.

What changes how long a habit takes

The infographic above shows four things that shape the timeline. Each one is something a support network can work with.

The person

Motivation, mindset and self-belief all play a part. When someone feels capable and has a say in the plan, the habit is more likely to stick because people are more likely to try something new when they feel heard. This is why we build each positive behaviour support plan with the person, not for them.

The habit

Simple habits generally form faster than complex ones. A plan that asks for one small change will usually move quicker than one that asks for five at once. Breaking a bigger goal into small steps also gives everyone something to celebrate sooner. Our positive behaviour support strategies start small for exactly this reason.

The context

Habits grow in a steady setting. The room, the time of day and the people nearby all act as cues, which is why a routine that works on a school day can fall apart in the holidays. Part of any plan is to look at the setting and adjust it. For more setting-based ideas, see our post on autism behaviour support strategies.

Consistency

Regular practice is one of the strongest drivers of habit formation. When everyone responds the same way, the person knows what to expect, and the habit gets the repetition it needs. Missed repetitions slow things down, which is why a shared plan matters more than any single strategy.

How Positive Behaviour Support strategies use the habit loop

Every habit follows a loop. A cue triggers it, a behaviour follows, and a reward makes it more likely to happen again. The more the loop repeats, the stronger the habit becomes.

Picture a family getting ready to leave for school. The cue is a gentle chime and a picture card showing shoes. The behaviour is putting on the shoes, which is easier because they live by the door. The reward is a favourite song in the car, straight away.

None of it is complicated. Repeated day after day, in the same setting, the loop starts to run on its own. That is a small picture of positive behaviour support strategies at work.

Behaviour works the same way. Before we change anything, we look at what the behaviour is doing for the person, often through a Functional Behaviour Assessment. What are they trying to say, get or avoid? That question shapes everything that follows.

Once we know, the loop gives us three places to work. We can change the cue, teach an easier behaviour to replace it, and ensure the reward goes to the new skill. Together, that is the heart of the positive behaviour support strategies disability services use, whatever the person’s age or support needs.

Good plans also aim to reduce or eliminate restrictive practices where appropriate. The NDIS Quality and Safeguards Commission publishes guidance on behaviour support and restrictive practices for anyone who wants to read more.

Four examples of Positive Behaviour Support strategies

Each one is a general illustration, not a plan. A real plan is built around the person, their strengths and their daily routines, with help from a positive behaviour support practitioner.

Use a visual routine to change the cue

A picture or written schedule can replace a spoken reminder as the cue that tells someone what comes next. For some people, seeing the steps takes away the stress of guessing.

Teach an easy replacement skill

If a person leaves the table when overwhelmed, a break card might become the new behaviour. It needs to be easy, specific and doable, so it works even on a hard day.

Reward the new skill straight away

A reward only builds a habit if it arrives quickly and clearly follows the new skill. It does not need to be big. Specific praise, a favourite activity or a moment of connection can all work, depending on what matters to the person.

Choose rewards with the person; don’t impose them. What feels rewarding to one person may mean nothing to another, so we ask what they enjoy and what matters to them. That keeps the focus on dignity, choice and strengths.

Keep it the same across settings

A strategy that works only at home is only half built. Families, teachers and support workers need to share the same cues and respond in the same way. With consent, we work with everyone in the person’s network so the habit gets the repetition it needs.

When progress feels slow

Every family hits a wobble. A holiday, a new support worker or a rough week can knock a routine sideways. Positive behaviour support strategies are built to be reviewed, so a wobble is useful information, not failure.

Here is some comfort from the research. In the study, missing a single day did not derail habit formation. Missing many days made it harder, so the goal is to restart the next day rather than abandon the plan.

That is what we mean by progress, not perfection. If the routine keeps slipping, it is time to review the plan rather than push harder. Talk to your positive behaviour support practitioner about what has changed. Our post on Behaviour Support Plan implementation explains why change takes teamwork, and why the whole support network matters.

A simple way to start

You do not need a full plan to begin noticing the loop. Pick one routine that matters in your household, such as the morning or bedtime. Write down what usually sets it off, what happens next, and what happens straight after. If one of the four examples of positive behaviour support strategies above feels too big, shrink it until it feels easy.

These three notes start a conversation with your practitioner about positive behaviour support strategies that fit your household, and they make the next step much clearer. Small notes like these are the raw material of good positive behaviour support.

Support for families in Redlands and beyond

At Behaviour Collaborations, we build positive behaviour support strategies with the person and the people around them. Our Capalaba-based team offers behaviour support in Redlands, including in Capalaba, Cleveland and Thornlands.

TelePBS is also available across our Queensland and Sydney service areas, so distance doesn’t have to get in the way.

Ready to talk to a positive behaviour support practitioner? Call us on 07 3050 3353, email info@behaviourcollaborations.com, or send a referral or enquiry through our website.

Above all, we collaborate.

Frequently asked questions about Positive Behaviour Support strategies