Having a block is really a form of worship, hanging on, and fear. It is fear of change. There are a few things that contribute to being blocked that can be changed. Learn to relax. Do whatever it takes.
Relaxation is sometimes a panacea.
Meditation, exercise, prayer, natural settings, taking a bath, listening to music, and massage are a few of the many ways to relax. Find what works for you. Sometimes we get stuck in HOW we create. Perhaps you always start composing a song by writing the lyrics first. Try improvising a melody first, then find some chords, then write the lyrics last.