It depends on where you live (or are willing to travel). You can make it as a pool player in certain parts of Asia and Europe. Pro pool in the US is pretty much dead. If you absolutely love pool and live in the US its probably best to find or work towards an occupation that deals with pool, but has income outside of tournament and gambling winnings such as pool hall owner/manager, instructor, table mechanic, merchandise retailer, league operator, etc.
+1
Trying to make it only on tournament or gambling winnings is extremely tough. Even the best players, have some sponsors, give instruction, exhibitions, etc. to subsidize their income. The key is to treat it like a business and have multiple streams of income. Work for a room that will give you the necessary time off to play tournaments and also gives access to table time.
You will have to treat it like a business. Keep accurate records and just like in poker look for any $$$ leaks that will drain your bankroll.
Most are giving you great advice about finding a trade or profession. If you have a family or desire a family, then this route is the best way to go. Because, once you have a family that is your number one priority.
To me though, my time is my most precious commodity. It doesn't matter how much money you have, time is pretty much the same for everyone. Working in a mundane career saps energy and time. You get up, go to work, play on the weekend, rinse and repeat. Time flies. Work for yourself doing something you love and have some control over time, it slows down. But, be forewarned, working at something you love to do can turn you against that very thing that you once loved to do.
Here is my free advice, which is worth about what you pay for it :thumbup: Take a year and play pool, tournaments, gamble. Find streams of income such as working in a room part time, become an instructor, etc. Even play poker part time as another poster suggested (stay away from other forms of gambling). You might not have as much time to devote to the game but it will be more than working full time. Get your feet wet, after a year you will be able to answer you own question. If it works out then great, If not, you can always resume the rat race later.
Darryl