Why five minutes works
Procrastination is not a time management failure. Across studies it tracks how you feel about the task: the more aversive, boring, or threatening to your sense of competence it seems, the more likely you are to put it off, and the delay buys short-term relief at the cost of a worse mood later. This is why advice built on scheduling alone tends not to stick. The feeling is doing the deciding.
Self-criticism keeps you stuck
Sirois and Pychyl's work on procrastination as short-term mood repair also found that self-compassion, rather than being soft on yourself, is associated with less procrastination, and that forgiving yourself for an earlier delay predicts less delay on the next round. Beating yourself up over the last two weeks adds more of the bad feeling you were avoiding in the first place. Treat the two weeks as information and start now.
Lower the barrier instead of raising the pressure
Starting is the expensive part. A tiny, concrete first action plus a short, bounded commitment cuts the cost of that first move: five minutes is small enough that refusing it feels absurd, and once you are in the file the task is usually less awful than the version you had built up. Finishing is not the point of the five minutes. Being started is.
Write the exact cue and the exact action
The best-evidenced trick here is the implementation intention: an if-then plan naming when, where, and what you will do. Gollwitzer and Sheeran's 2006 meta-analysis of 94 studies put the effect on goal attainment at d = 0.65, a medium-to-large effect and an unusually reliable one for this literature. That is what step 2 is for. "If it is 9am and I have my coffee, then I open the draft and write one ugly sentence" beats "work on the report" by a wide margin. More on the research in the guide to stopping procrastination.