Maybe you're afraid of something... Are you perfectionist?
For me the best method to break the pattern, the endless circle of procrastination is to do a little - really little - and even imperfect - step towards my goal. Suppose you want to write an essay. Then sit at the desk (one step). Open your word processor (another step). Then write one sentence. (I know, the first sentence is the worst
so write ANYTHING. You'll correct it later). Then write another sentence (even as imperfect as the first). And continue...