Know what you love. Do what you love. If you can't pay the bills doing what you love, do what it takes to pay the bills, AND do what you love. If your heart isn't in what you are doing, start doing things you can do with all your heart. Heart leads the way. Heart knows the way. Listen to your heart. Follow your heart. This isn't about doing what you want. This is about doing what you love. Practice telling the difference between what you want and what you love. Live to honor the difference by doing what you love at the expense of what you want. I'm betting you will learn to live with the sacrifice.
The Gateless Gate of Zen is one way of getting past "the noise of the dust of the world" in order to access our innate (or original) nature and find there what we need to do what needs to be done in each situation as it arises all our life long. Taoists refer to this process as "Turning The Light Around." It comes down to the same thing: Consciously laying aside intellectual, rational, logical, moral, ethical, common, ordinary, traditional approaches to doing what is right in a situation, and opening ourselves to the spiritual world of inner reality-- instinct, intuition, resonance, realization, spontaneity, impulse, awareness, "the inner light," "the inner guide," inclination, inner urge, inner drive, etc. in trusting ourselves to what is called for without knowing what we are doing. We all have gifts, how we access them and rely on them in piloting our boat on its path through the sea tells the tale that is ours to tell.