The longer you think about a task without doing it, the less novel it becomes to do. Writing things in your to-do list and coming back to them later helps you focus, but it comes at the cost: you’ve now converted an interesting idea into work. Since you’ve thought about it a little bit, it’s less interesting to work on.
It’s like chewing on a fresh piece of gum, immediately sticking it somewhere, then trying to convince yourself to rehydrate the dry, bland, task of chewed-up gum. Oh. That thing. Do you really want to go back to that? “We’ve already gone through all the interesting aspects of that problem, and established that there’s only work left”, the mind says.
Original source: Improvisational Productivity