What was inside you when you wrote those books will always be with you. It only needs a catalyst, an inspiration. They say we should not wait to be inspired, because inspiration is all around us and only waits to be recognized. Try to be happy and not worry about this and perhaps you'll view things around you differently and find your trigger.
I don't know if what I wrote will happen, but I hope you find your writing again. It can't hurt to be positive about it. Good luck ^_^
Oh, and your talent is still definitely there:) It shines in every eloquent post you write.