For me at least, one of the biggest causes is writing and part of that is having multiple experiences of asking for help and being told to “just write the thing

For me at least, one of the biggest causes is writing and part of that is having multiple experiences of asking for help and being told to “just write the thing” or “stop overthinking it” in response to my questions. I’ve gotten much better since developing the confidence to say to myself “no really. I need to get the answer to this question.” So if you are procrastinating, consider the possibility that your subconscious still remembers that you need some information but some other part of you is blocking you from getting it.