Paint with your soul, with your spirit, with your inner conscious.
If you paint by everyone else's standards, you leave yourself open to painting superficial things that no one cares about. If you paint from within, you won't care how others perceive your art because it means something to you. You are expressing your spirit in your work and having the freedom to do that is worth more than any amount of money.
Paint and be free. Release your inner creativity. Channel your energy and paint what you feel.