I want to make a living by playing poker ( no limit and Limit Hold'em or Stud or Omaha but I prefer micro limit Hold 'em right now !!! ) and/or trading ( forex, futures, cfds ).

Playing poker and trading have so much in common.
1- Minus sum game.
2- Money management is most important aspect in trading and bankroll management is most important aspect of poker.
3- Risk / Reward game.
4- Chance has a little effect but skills has most effect.
5- You should control your emotions.
6- Do not be greedy.
7- Tight / aggressive playing(trading) is best strategy.
8- You should have a plan and strictly follow it.(discipline)
9- You never now what you get in short-term but it's not the case in long-run.