Second chance: Hypnosis

I was 31, laying in a pool of my blood. As my eyes closed and I slowly lost consciousness, I thought about all the wonderful things in life I would miss. My family, friends, pets. Everything I loved would be taken away from me when I died. With that thought, I died. However, God, the universe, or whatever it was, brought me back to life. I was in the past! This time I will accomplish everything I couldn't in my previous run. With the power of hypnosis and a second chance, I will etch my name into the history books! But is it that simple? How will this power change who I was?