Play with longer time controls and take your time to think! An average game is often less than 40 moves. If you play 10 minute games, that averages 15 seconds per move. If you are learning, that is nowhere near enough time to think of what you should be doing. If you are playing live games, you should be playing with closer to 1 hour time controls. If you cannot commit that much time in a single sitting, then play online games with 3 days time control per move. Then you have time to think each move out. Think about what you would do, and think about how your opponent would respond.
You will be surprised how your game progresses if you just give yourself time!
I learned how to play chess when I was about 7 and played games now and then, but I've just recently started getting obsessed by it (I'm 17). I'm not sure how to approach studying chess. I've studied different openings and done tactical training exercises, but I feel like it isn't helping. I play live chess a lot, but I have trouble beating anybody over 1000 pts. What should I do? I know I should just keep playing, but I'm not getting any better. I need some solid advice, something other than to keep trying. Help?