Flat illustration of a clock with an arrow pointing to an open notebook with a pencil and a tick, symbolising an if-then plan

If-then plans: an underrated tool against procrastination

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In short

  • An if-then plan sets out when, where and how you’ll act: “If X happens, then I’ll do Y.”
  • The technique is well studied. A meta-analysis of 94 tests found a medium-to-large effect on reaching goals, and a newer one with 642 tests confirms the benefit.
  • It works best when the goal really matters to you. It doesn’t replace motivation, but it helps turn motivation into action.

The problem in everyday terms

You mean to keep working on your term paper today. You’re serious about it. Then a message comes in, the dishes need doing, one more coffee, and by evening the file is still unopened.

That’s rarely because you don’t care about the goal. There’s a gap between intention and action: the right moment slips by unnoticed, or a distraction gets there first. A good intention on its own doesn’t tell you when to start.

If-then plans, called “implementation intentions” in research, target exactly that gap.

What the research says

The idea. Psychologist Peter Gollwitzer described if-then plans as linking a specific situation to a specific action. Instead of “I want to study more for the exam”, you say: “If I’m sitting in the library at 8 am on Tuesday, then I’ll open chapter 3 first.” The situation becomes a cue that sets off the action almost automatically.

The first big meta-analysis. Gollwitzer and Paschal Sheeran pooled 94 independent tests (Gollwitzer & Sheeran, 2006). The overall effect on goal attainment was d = 0.65, which the authors rate as medium to large. The plans helped with several typical problems: getting started, shielding a goal from distractions, and letting go of approaches that aren’t working.

The new, much larger analysis. A 2025 meta-analysis covered 642 tests (Sheeran, Listrom & Gollwitzer, 2025). If-then plans affected behaviour, thinking and feelings, with effects between d = 0.27 and 0.66. They were stronger when the plan was actually phrased as “if …, then …”, when people were highly motivated, and when they had mentally rehearsed the plan.

Directly against procrastination. In a diary study with 134 university students, everyone listed five academic tasks for the coming week (Lin, 2017). Half also formed if-then plans. This group completed a larger share of their tasks and finished them faster than the comparison group.

Combined with obstacles. One variant pairs a wish with a sober look at your biggest inner obstacle and an if-then plan for it (mental contrasting with implementation intentions). A meta-analysis of 21 studies with 15,907 participants found a small-to-medium effect of g = 0.34 (Wang, Wang & Gai, 2021). It worked better when guided by a person than when delivered only in writing.

What it doesn’t say

No magic bullet. On average the effects are solid, but not guaranteed. Without real motivation, even the best plan does little; the new meta-analysis found stronger effects precisely among highly motivated people.

The average isn’t your result. Depending on the goal, the type of plan and the person, effects range from small to medium-large. Meta-analyses tell you what happens on average across many studies, not how well it will work for you. For the version combined with obstacles, the authors also note that the true effect may be somewhat smaller because of publication bias.

Procrastination isn’t only a planning problem. If you put things off because a task brings up anxiety, boredom or self-doubt, you often need more than a plan. If-then plans can make starting easier, but they don’t resolve the reason behind it.

No substitute for support. If procrastination is seriously affecting your studies, your work or your wellbeing, it’s worth talking to a student counselling service or a psychologist.

How to try it this week

  1. Pick a task you keep putting off and that genuinely matters to you.
  2. Find a clear cue: a time, a place or an event that will definitely happen. “If I get back to my desk after lunch, …”
  3. Set the first small step: “… then I’ll open the file and write one sentence.” Small enough that excuses barely fit.
  4. Plan for your biggest obstacle: “If I pick up my phone, then I’ll put it in the drawer.”
  5. Say the plan to yourself two or three times, or write it down. At the end of the week, check: how often did it kick in? Adjust the cue or the first step.

Read more on Clarity Daily: The power of single-tasking and 5 daily habits that improve mental clarity.

Sources

  1. Gollwitzer, P. M. & Sheeran, P. (2006). Implementation intentions and goal achievement: A meta-analysis of effects and processes. Advances in Experimental Social Psychology, 38, 69–119. doi.org/10.1016/S0065-2601(06)38002-1
  2. Sheeran, P., Listrom, O. & Gollwitzer, P. M. (2025). The when and how of planning: Meta-analysis of the scope and components of implementation intentions in 642 tests. European Review of Social Psychology, 36(1), 162–194. doi.org/10.1080/10463283.2024.2334563
  3. Wang, G., Wang, Y. & Gai, X. (2021). A meta-analysis of the effects of mental contrasting with implementation intentions on goal attainment. Frontiers in Psychology, 12, 565202. doi.org/10.3389/fpsyg.2021.565202
  4. Lin, L. (2017). Integrating the theory of planned behavior and implementation intention to overcome procrastination. Acta Psychologica Sinica, 49(7), 953–965. doi.org/10.3724/SP.J.1041.2017.00953
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