Today, I played poker for about four hours. I started with $200 and ended up with $1000, cashing out $800. I kept $200 to play blackjack on my way out. Unfortunately, I lost six hands in a row and $600. So, instead of being up $800, I only doubled my initial buy-in. I don't even like blackjack, but it's not the first time I've lost poker winnings on it. I might need to make a rule to never play blackjack again. Is this common for you too?