Entrepreneurs notoriously will keep going way longer when challenged, when others would give up at the first sign of a problem. Their stamina may come at the expense of their health.
Our bodies are a feedback loop to our health if we listen to it, it will tell us when we are out of balance.
But this takes quiet contemplation.
Sit quietly, listen and focus on what your body needs to maintain health and keep up with the stresses you place on it.