1) Lack of self-confidence. I blame it on being made fun of in junior high and high school for being smart. There's also being conditioned as a woman to not take credit for my own work and to brush off what I do as not interesting or valuable. I keep hoping that what they call Imposter Syndrome will go away, but no luck so far.
2) Laziness/expecting someone to pick up after me. I laugh whenever I read some stupid article that claims the reason women spend more time doing housework because they have higher standards than men, because nope, that's not how it works in my household. I know I should be better about putting stuff away and doing my share of the cleaning without being asked, but I have this amazing ability to consider piles of stuff as part of the furniture rather than as problems to be dealt with.
3) The mistaken belief that if I ignore things I have to do that I'm already embarrassed about putting off, they'll take care of themselves. This applies to keeping in touch with friends, household chores, work obligations, etc., etc. The guilt and shame over having not done whatever it is already make me bury it even further, which isn't exactly helpful. I've started to make a little progress on this front with a pomodoro-like app that allows you to set a timer for tasks on your to-do list. If I can poke myself to "just work on it for ten minutes," I'll often get into it enough that I can finish it already. So there is hope. :)
Do any of these sound familiar?