In the context of professional work, we ought to simply practice more.
Robert Greene sums it up well 1) practice, practice, practice 2) learn from the masters of the field 3) transfigure, make the thing your own.
It’s rather easy, except the practice part takes at least 10 000 hours. If you are really committed you do not measure it in time, but the times you do. Masters always find room for more practice, more improvement.
Study the masters: do more.
When it comes to believing, our minds easily find a hundreds reasons to do or not to do if we go into that. How about we would just do what we want to do?
Practice what we have set out to do without any other thoughts. Learning to let go of what can be done, what is possible and instead just try to do your best without attachment to the result. Then keep on improving that result, because of course if you are doing your best and you are learning, your results are improving. Results give the feedback of improvement after all, if there is no improvement in results you are not improving, so you are still learning 🙂
Do more, get more results and do not let your beliefs hold you back.