The Hammered, I'm guessing that youre about 15-20, right? So if you keep listening to music in low volumes and wear ear protection to concerts it'll sort itself out. If not, see a doctor.
If youre playing with other people, buy some ear plugs and take them to band practice/jam sessions. You'll never know when you'll be playing with a stupid guitar player who thinks that turning the amp volume to 10 in a small room is a good idea.
Also, if youre serious about it, and play constantly with people, you might want to invest in custom ear plugs. It will cost you, but its worth it (keeps volumes down while not blocking any frequencies)