A simple and, at least in my experience, fairly foolproof approach to getting unstuck by shifting between the three different centers of mind, body, and spirit:

• If you’re stuck on a brain problem, move your body or do something to engage your spirit
• If you’re stuck in an emotional vortex, set your mind to work or move your body
• And if your body is revolting, engage your spirit or exercise your mind

This is why sometimes all it takes is getting up and doing ten jumping jacks to get you back on a flowing path again.