I can relate to your story. Once upon a time several years ago I was playing the 5/10 Limit regularly, and I was going several times a week. Also playing in the 1/2 NL on the weekends in a backroom b&m game. I did some math and it turned out the cost of travel was not very significant, and I was making much more per hour than when my "little job" at the time. I quit my job and ran well for a few more months. I had the money that I needed to pay the bills and buy some things for me...Then one day I couldn't win anymore. I would flop a trips, and the other guy would call my 750 all in and he would river the gut shot str8. a week later I even lost the same gut shot straight, this time for over a $2000 pot to the same guy as the week before........This went on for me for 3 MONTHS ....THE MORAL of the story is: if get a job at mcDonalds expect to be making some fries and hamburgers....IF POKER is your job, expect to lose when the downswings come. That's part of the life of a pro poker player THATS why they are called downswings.
Mathematically, you can afford to play poker for a living once you have 6 months of ALLLL your expenses paid for in SAVINGS. THIS CANNOT INCLUDE YOUR BANKROLL: You must also develop and successfully utilize a bankroll management strategy.
If you are prepared to meet certain criterion and have a solid business plan of how you will prevent yourself from going broke while you are unable to avoid negative variance, while also meeting all of your financial obligations...by all means, I highly recommend you pursue this dream immediately. Otherwise, perhaps reevaluate your plan, and decide not IF you should, but HOW YOU WILL. If you can answer that question you will be undoubtedly more likely to success once you begin this journey you wish to pursue. Best of Luck to You !