These are all things related to self-control.
More anxiety (or whatever your emotional block is) around work, more self control required to get yourself to do it.
If you deal with the anxiety (on top of continuing to use your existing self control) you'll find that you need less and less self control to get things done.
That being said, self control can absolutely be trained and it is a part of learning to deal with your emotions. It's not an either or.
This comes out mostly with my boss who is famous for wanting "plans" but will trash the first N versions delivered for any number of unpredictable reasons, while questioning your competence for having provided something so bad. Often he often casually admits to having completely changed directions in between plan iterations. Never comes to a conclusion. Eventually devs just write up some tickets to work on the obvious & urgent work and get to it.