I had a big problem with this when i first started. I would have a couple of bad beats and then just play crazy afterwards and end up losing quite a few chips.

One of my best mates who is extremely good at poker then taught me how important one's state of mind is before and during poker, something which i hadn't paid too much attention too.

Now I make sure i'm properly prepared to "enter battle" before i play and I can accept bad beats now, especially if i made the right play. I also make sure that i don't play for too long at each session so i'm performing at my optimum level when i'm at the tables.

I keep seeing Marm going on about this zen book, which i think addresses these issues, so i'm probably going to get that next, as i think the state of mind is one of the most important factors whilst playing poker.