For me, the answer to this question is sadly simple. I have 'tell don't show' syndrome, which means the reader cannot properly get inside my character's head.
However, the best way of overcoming a problem is admitting you have one! I think it'd make us all feel better if we knew that every writer out there has something with which they struggle, even the best. Let's call this writing therapy =)
So, what is your writing weakness? Overuse of metaphors? Motivation (darn, you should have written something today, but instead you're busy reading up on Kim Kardashian/ the weather/ Nathan's forums (hint, hint)) Is your writing too complicated? Do you slip into the passive voice? Do your characters drink too much coffee (let's face it, that's always a weakness.) Have you noticed your characters always *look* at something? (They looked at the wall/ the car/ the dog that was peeing on the carpet?)
