What am i doing wrong?

stop bullet for now, get past the level of hanging pieces, learn beginner tactics.

I recommend chesscorner(google it), for a brief overview of what you need to learn to get better.

Once you get past the level of hanging pieces and feel confident in tactics, start positional chess by studying books by J. Silman (ONLY when you're around 1400+)

It takes time and practice to get good at chess.  Looks like you've played less than 100 games total here in the last year.  I've lost more games of chess than you've made individual moves :p

Get a book out of Seriwan's winning chess series, do tactics puzzles, and play 10 or 15 minute games (no bullet or blitz).

What do you consider good? Set your time controls up id rather play a 15 minute game where i know i played my best and devoted all my concentration to then 5 3 minute games where i won 3 and completely blundered the other 2. One thinga  lot of guys on this website forget to tell you is that FOCUS is 99% of chess. If you can truley sit there and stare at the screen and not switch tabs and uflly do your best to analyze a position good things will come. Id reccomend watching youtube videos of kingscrusher the guy is a genuis. 

Oops, I was saying no blitz then said 10-15 minute games.  Estragon said it better, play longer games, that's where you have enough time to practice skills and produce a game worth learning from afterwards.

Change to 15 minute games as the shortest, 30minutes give you a fair bit of time, to study all the consequences of each move you make. Use the analysis board to have a play before you make a decision. And remember the line

"If you see a good move - don't play it" Look for another one, look to see if it's safe, look for what the other player may try, flip the board and see it from his side

I have improved massively in a few weeks from an 800 rating in 5 and 10 minute games to 1200 in 15-30 minute games and even >1400 in online

I have just started on line and only play 2-3 games at a time. It gives you time to really think things over, study each opening (use game explorer) and start to look as far ahead. You only get better by improving the way you approach the game, and the patterns will build in your head

There are other interesting things to do in life than playing chess, so if the OP doesn't enjoy it, why not try something else ?

The reason i do blitz chess is that i make bigger mistakes in slower chess. Even with self-analyasis, i tend to make a stupid move more often in slower chess and i like playing at a faster rate. When i play a slower game, i tend to run out of time first because i am a slower player. And i understand what you mean by slower chess allows you to examine moves and outcomes, so don't think i am ignoring it. I am starting to play more slow games, but i still play blitz. And hicetnunc, i am still interested in chess and getting new replies until i call it quits. And for future warning, I don't have a platinum or diamond account. Too young.

If you are exclusively talking about quitting because you are doing poorly in bullet, let me just say that bullet is not chess. Bullet is seeing who can move the fastest. One of the "strategies" in bullet is trying to move your king to the 8th rank! Try playing with at least 15 or 20 minutes, so you actually have time to think about what move is best. And for me personally, even that's not enough time.

      "When I was a boy" we didn't have this new-fangled speed-chess. We had an hour and 40 minutes to make 40 moves. And then the next time control was an hour to make 20 moves. If the game wasn't over yet we adjourned the position and finished the next day! With another hour to make 20 moves, and then another hour to make 20 moves. Until the game was DONE! None of this fancy schmancy whippersnapper throw the pieces around. That was chess by gum!

I concur with the folks stating that speed isn't necessarily a good barometer.  I stink at speed chess, in fact I usually play 15min games here.  A lot of the games you see are folks having memorized moves/patterns from great games.  

While this is ok, I'm more of an experimental player seeking to develop my own, new, tactics.  I also agree with the comment that FOCUS is 90%.  The more I tend to focus and take my time, the farther I can see ahead.  When I'm rushing and only thinking 1 move at a time, I make rookie mistakes. 

Don't give up the game just because you think you aren't improving.  My advice is, play someone in real-life on a real board, no clock, and see if you continue to make these mistakes.  If you don't, then you aren't as helpless as you may think you are, it's just you don't do well under time-based pressure.