1) Never harm your life out of tables for poker
2)Never lie to yourself about your skill
3)Your bankroll and your skill will determine the limit you will play
4)If you are skillful and have few money you'll play
freerolls and/or microlimits
5)If you aren't skillful but have a lot of money, play within your control of how money you may waste.
6)If you have money, stablish stop loss for hour, day, week and month.
7)Calculate your average profits per game.
8)Play with a comfortable Bankroll to your bad beats doesn't harm your A Game.
9)The most problem in learn to play a profitable poker is that we guess to know more than trully we know, ever.
10) Look for a coach as fast as now. Players waste more money playing than studying with a coach.