You have living expenses irrespective of your loss or profit generated by stock trading. Stock trading is a waiting game, where money is transfer from the impatience to the patience. In stock trading working harder is no guarantee of making a positive income.
As such, full time stock trading is suitable for those who has adequate funds set aside to cover his monthly expenses and adequate capital for trading. It takes time, effort, focus, discipline, etc to learn the art of profitable trading.
Better to stick with stock investing, buying regularly blue chips stocks that pays good dividends. Do this first, if successful then think about going full time. Good luck.