Remember, in order to beat the dealer you are to have 21? Well, blackjack is that type of game where each player is playing against the casino. The players are not making a team or sth, everyone is playing on his own and the dealer represents the casino.
Blackjack dealer rules
Many people suppose that in order to start playing good means to learn apply the basic strategy. Also you are to follow the main strategy that is recognized as the best working in the world. It is called bankroll management.
Bankroll Management
It is a vitally important part of your winning. Winning does not usually mean jackpot or something close to that. Every player has winning and losing streaks, or good and bad or whatever you call them. It is always good to know your playing budget and especially good to stick to it.
Blackjack dealer rules
If you know that let us say today you have $100 for blackjack, it means that you do not spend more even if you lose the entire sum. Bankroll mostly concerns the usual players, as the casual players play from time to time and do not actually care about the game.
If the constant player cannot minimize the losses and maximize the winnings, he is having real troubles. Troubleshooting in this case is developing discipline and being eager to win. Also the knowing and applying the strategies and consult  blackjack strategy chart is also important.
There is a golden rule that says "Quit playing when you Lose another $100 (in your case it can be another amount of money) not when you win another $100." Sometimes it happens that the person loses his entire bankroll. The person cannot turn the odds on his side.
Actually, you are to be prepared for this, as you set the definite sum of money for the game. Sometimes people cannot afford losing the entire bankroll, and it is the time when ill judgment comes. The person starts placing stupid bets and makes really weird moves. People play split, where it is odd and so on.
That is the conclusion. Never go over your bankroll and your bankroll should be affordable for you, as you might lose it. And always remember to enjoy the game!!