Barring injury, anyone can improve with practice. The thing is, golf is a monster that will chase you around in your dreams both day and night if you dare to test it. Its quicksand, and the deeper you get in the more you realize that hokey cliches like "Golf is Life" are actually true.
You can practice, prepare, meditate, and do everything right and Murphy's Law is still just as likely to jump out of a gopher hole and fist you in the ass. I realize this probably isn't news to anyone, but feel free to laugh at my frustrations, I still love this damn ridiculous game.