150+ uses? Hmmm well take it easy on yourself dude. No one's perfect. Just try and be happy in what you do and don't dwell on that subject too much. Nothing you can do about it now.
Do you read? If not, start reading. Really, once you start reading, you get better at it and it works your brain. Start with magazines. I find it hard to concentrate some times on books. Our cells regenerate, chances are you aren'y terribly damaged. You can use a computer and you seem capable of thought. That's more than some. Work out that brain!