Thanks for the comments!  Chess definitely doesn't make me unhappy, just makes me feel very dumb sometimes :)

It takes time to get better, the more you play though, the more you will learn and the better you will get. I know I have improved alot since playing on this site, and the last tournament I managed to beat someone 500 or so points higher then me and they didnt even see what I was planning, pulling a win out of no where by sacrificing my queen to put them in mate.  That same tournament, I managed to make it to round 3 for the first time as well, and ranking in the top 10 for my first time ever in a chess tournament.  It took me several tournaments, but I finally had a good run and did better then i thought, even when in the second round it looked like I was about to lose 3-4 games, that I eventually came back to win someone because they made mistakes as well. I lose alot still, mostly been practicing different things in live games, but it takes time to try different things and work with all that works best for you. Everyone makes mistakes and misses moves, even the top players do, so try not to let them get you down too much. 

I took a look at a few of your games. Your play is actually pretty decent, you just need to keep practicing your tactical vision. Consistency is key.

In addition to tactics trainer, try taking some tactic problems / puzzle and analyzing them without the time pressure that the trainer has. Make a note of every possible capture and try to identify which pieces are poorly defended. It might help.

Poorly defended pieces and pawns tend to be the first things that get eaten when crazy tactics start to happen.

Keep trying, and good luck! Most of all, just have fun!

Abandon chess if it's making you unhappy. If chess truly makes you happy, then play because you love the game, not because you are trying to improve. All you need is practice.