I cant read well with my glasses?!

I cant read well with my glasses?

I read well without. Why is that? I must wear glasses to drive.

You are most likely short-sighted (myopic). You are able to see close things (like words in a book) clearly, but you have trouble seeing things that are far away, which would be why you need to wear glasses for driving. If you are unable to see clearly with your glasses or your vision has changed in some way, you need to go back and visit your optician and tell him/her exactly what has happened. You may just need new lenses, or you could have another problem with your eyes that needs to be diagnosed.