It does not matter whether you are tired, frustrated, fearful, lonely, angry or discouraged. Your job is to produce art in the world and help people rise above average.
Because no matter what low you are facing in your life right now, there are always people who look up to you to show them how life works. It is a great responsibility on your shoulders not to let them down.
If, you succeed in being a force of inspiration when there seems darkness in the lives of other people, you would have lived a successful life.
Everything else will follow.