Just my two cents...why not continue working and take a couple of classes in the evening or on line? That way, you still have an income coming in and can work towards your degree. Yes, it might take longer, by the time you have paid off the house loan, you'll be ready to go to school full time and not have to worry about the house and one nice thing...you may not have that many classes left to take.
Again, just my two cents.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.