According to Sigmund Freud (and many others), all humans have a sort of "death drive". This drive is probably what gave rise to the concept of Nirvana in Buddhism. Your wish to erase yourself probably isn't such a bad thing, unless you actually start having real suicidal thoughts. If you do, it's best to talk to someone about it.
One way to at least create the illusion of "erasing yourself" is through meditation. Stop your flow of consciousness for while.