The New Year is a great time to reflect and take stock of where you are in your career. Is your work satisfying? Or do you feel ready for a change? Are things not working out the way you had hoped? Qutting your job, in favour of finding something more suitable takes courage and honesty with one's self.
I have quit three important jobs in my career. The first when I was in my ealy 20s, with a tyrant for a boss, and little "on-the-job" experience, but I knew enough to realize the situation wasn't right.
I quit and went to Cuba for a week. Best decision I could have made at the time.