Like I know I have done this thing like multiple times for example practicing how to drive or whatever but then you take a a day off and then that day becomes a week and then months and now just the thought of doing that same thing again (which you did fine) makes u want to throw up from anxiety because somehow in your brain you have made up this idea that u will fail and you are awful and and will be bad at this and that you shouldn't do it cause what is the point but you know that is not true  but you still can't get up and do that thing because your brains hates you and is making you think about all the worst and irrational things that can happen so u just give up but that makes you even more anxious and guilty and the cycle continues for who knows how long...