What are Hamlet's internal conflicts ?

In Hamlet's soliloquy in Scene One, we can see that he is inwardly conflicted about the importance of life.... he is, in fact, contemplating suicide. In Scene Four, specifically, he is tormented by his disgust for his mother's remarriage and perceived betrayal and the love he bore her. His reaction and cruel treatment toward both Gertrude and Ophelia support this inner torment.