Is it towards what you desire or what you lack?
As every archer knows, in order to hit their target they must focus on it and it alone, everything else is just a distraction. Visualize yourself hitting your mark, whatever it is, and take the steps necessary to make it so. Practice so it becomes second nature. As you do notice what adjustments are necessary to bring yourself in alignment to your target then practice some more.
Resist the urge to give up for that is just your scared self talking. You have what it takes as long as you stay focused.