question of the day

So i want to ask a question, Now I've been looking into history for answers and to prepare me for the future. But i rationalized what i should and how i should deal with certian issues but my motta is don't worry about the past and just deal with the present but in the end i just hurt myself and others but i wanna know more about this person or subject but i dont want keep hurting myself and the other perosn or subject really what should i do?