Sucked in again

I had said yesterday that I was going to take a few days from poker. So guess what I did yesterday, twice,...yes I played online poker. The first attempt I actually made a few bucks only to lose most of it to calling with a weak hand when I was probably beat (it turns out I was). The second attempt was a O8, which I know how to play, but made dumb mistakes of playing hands that I know I shouldn't. I lost money on 08, but made it all back at blackjack. I of course know not to play blackjack because it is -EV. Maybe you see a recurrent issue here. I play poor EV bets. This must be corrected.