Quit job?

I have a well paying job. And I have recently purchased my own place and caught up on bills. The problem is, I'm So depressed and unhappy. Its never what I wanted to do but I took it because of the pay..I'm looking for another job but it's difficult. I want to quit so bad but I know that's not always the responsible move. What would you do? (People with families I know it's easy to answer) but I am single and 23