If you want to change your present then re-evaluate your past. Therefore, the present will change and naturally, so will the future. Maybe that’s why George Orwell said “Who controls the past controls the future. Who controls the present controls the past”. It is the same for history….
Past, present and future are all very important, however, the one that can shake up the present and the future is the past. The past is history. The history of oneself is extremely important.