You don't provide any context as to what form your struggle takes with each new project. So it is hard to give general advice. However ...
In doing the many random things, have you noticed any that you enjoy far more than others? If so, then it might give you an ideas as to what area to focus your learning and development upon.
In doing the many random things, have you noticed any that you enjoy far more than others? If so, then it might give you an ideas as to what area to focus your learning and development upon.