You don't say what it is that you do, how marketable you are, your family situation (wife/husband, kids) your current salary, financial needs or your age.
The more information you provide, the better the advice is going to be.
My advice: do what you love. Love what you do. If you can't, then make a shitload of money so that the time away from work is more pleasant.
Lots of hours for a car salesman.
Michael