So you want to be more decisive about what makes you happy. Get off the stay or go swing to be happy.
I suggest opening the Happy for No Reason book at random and try the exercise in that section for a few days or a week.
Meanwhile give yourself permission to remain undecided about your relationship. You could leave but you don't leave yourself. First you need to find yourself. The Resiliency course would be another option whether you decide to stay or not.