I pick the writing music I listen to based on the subject of the scene because the natural ability of music, of any art, is to make you feel. Think about it: is there anything else that has the physical ability to make you move?
Our emotions are powerful. They can drive us to action, or to crippling indecision. They are powerful tools to dial into while writing and while living, but once they control us is when the power goes terribly awry. That's why emotions can never be the sole basis of making a decision: we have to keep functioning, we have to keep moving. We are not animals. We do not live on the basis of emotions, we do not always eat what's immediately in front of us when we're hungry or kiss anyone we see who's attractive. That's the power of being human. So take those emotions -- they're tools, but make sure they stay that way; or your life is going to be an uncomfortable roller coaster.