Clod,
It is a choice and an indication. You can take small steps toward it and stop before the point of no return and see if it gets better or worse. You can also choose to put your mind and attention somewhere else.
When it just won't go away then you need to look at what it is saying to you.
Find a moment or two of quiet (I know, easier said than done) and listen to your heart, not your head. If it is the right thing, then the universe and FSM will underwrite your actions. If it is the wrong thing then you will be swimming upstream.
Not sure if that makes sense or helps.