as your wish, it depends on you when you are going to turn off your game. but of you say regarding profit then I can suggest you that when you get a marginal level of profit then you should leave the game, do not expect more which kills you. try to make a plan and do according to your plan in every aspect your life.
Right , because plan will let you focus ,So if you have a good plan in your mindset you can have a good result in your decisions after that.,Even the time you lose you will not regret to much because planning is everything.