I say decide who's the most important person in your life. Is it you? Get out and take care of yourself. If it's your daughter, you have to ask yourself how would she do if you died prematurely do heart failure or some other avoidable condition due to you not taking care of yourself, and then decide if taking care of yourself helps her as much as it helps you.
If you think of it in that regard, the decision actually ends up being pretty simple when some stressful situation appears.