I just want to quit my job but can't

I have been working in the current company for 7 years straight. The pay is OK. At least it has been keeping my family running. But to be frank, I am tired of big corporation job and just want to wake up one morning and be out of it. I don't hate my job, my group, my company or anything like that. It just has very little meaning...

It just felt better to be doing whatever I want to do. I want to be growing a company or at least starting one. I like to spend my day preparing for meetup session later afternoon. It's actually very nice if I can control when I want to shut down and focus on the work vs. when I like to be chatty around people. I am an introvert but I would try to be extrovert once in awhile.

Back to the topic, now it's even harder for me to quit my job. Why? We just had a 3-mo old baby. Our family needs income and we just don't have much saving for me to take risk. It's impossible for me to be out of income for 1-2 years. So here I am: stuck in a vicious cycle of working for corporation to make money for a living.

Anyone of you has suggestion for a "breakout" event, please let me know.