I lost a lot of money at the casino, how do you get over that?

now you got 2 grand.....take a third of it, about 700 and play correctly this time...according to PDQ ( he has said so over two-thousand times) and backed by mathematics you can expect to lose one half of a percent when playing blackjack...you lost 100% and you are due for a hot streak to win it all back...then in the middle of your hot streak tell that dealer to shut it or you will play someplace else