With the amount of possibilities out there, with all the options one has to learn new things and reinvent themselves, it is very easy to get stuck.
It is the feeling of never being enough, the search for perfection, the impression to always need something more before actually getting going.
It is resistance.
Sit down instead and do the work. You’ll get better at it with time, better also at judging what to adjust, in which direction to progress, what else to learn, who to listen to. Doing the work is the only way.