Let me give you the only lesson you'll ever need. The less you care about the game, the better you will do. The more you try the more upset you will be when you fail and then that aggression/depression will only make you perform worse. Do what you like to do, whatever is the most fun and enjoyable to play/do with the game. If winning is the only thing you want to do you will either become total pro status, or way more likely, you will do a lot worse. Even if fun for you is frame data and numbers, get to crunching then nerd. Once you find what is fun for you the rest just falls into place, you learn the matchups if you stick to a character, and then every time you do bad you can still have fun, and move on. It's all mentality in fighting games, that and timing.