Reading

I personally love reading. 
Lots of people my age generally don't like reading because for some reason it is seen as 'uncool' I suppose, but I think it's fantastic. It can stop you from being bored and give you new things to think about, which can be a brilliant relief from having to put up with your own thoughts and problems day in, day out.
I always need to have at least one book on the go to keep me sane, but I normally have at least three going at once.
Some people say that a blog is supposed to persuade people.. so I suppose could try that.
Read. Pick up a book and give it a go, you might surprise yourself and actually enjoy it.