The best way to not feel hopeless is to get up and do something. Don’t wait for good things to happen to you. If you go out and make some good things happen, you will fill the world with hope, you will fill yourself with hope.
If, while at the piano, you attempt to form little melodies, that is very well; but if they come into your mind of themselves, when you are not practising, you may be still more pleased; for the internal organ of music is then roused in you. The fingers must do what the head desires; not the contrary.