What if you aren't good at anything? You might find it helpful to consider this possibility and make peace with it, since you have no real control over it. Most people are average at most things, and the willpower to change ones stars is also scarcely distributed. Realizing that it's overwhelmingly likely that you are "only" average might help you relax and enjoy the ride. If you can attain this kind of equanimity, you may find yourself better able to appreciate things as they are, along with the serendipity of life. You may then realize that life is full of possibilities which were hidden from you by a fixation with linear progression.