If you can survive for a year or two without a salary then maybe you should quit as a way to figure out what you want to do with your life. Get involved in causes that inspire/move you. There is an old Persian saying: when the student is ready, the teacher appears.

A friend of mine got burnt out from the health insurance industry after 7 years. He moved to India as a volunteer, saw lack of healthcare, and started a micro health insurance fund for the poorest of the poor there. Last I talked to him he told me that his org has made 6000 doctor visits possible (majority for critical issues) for a class of people most of whom have never been to a doctor in their whole life. People in the US are trying to copy his model for the 60 million uninsured here. He says is happier and more fulfilled now than he has ever been. I am trying to take his lead and trying to find causes that I'd be happy to contribute towards (locally) even if it means it has to be without any financial reward.

The beauty of our craft is that it does not discriminate, we can apply it to any bad situation that we want to see improved. Finding the cause worth dying for is the struggle.