Going back to the past

For months and months I been wanting to go back to the past. Now I question myself. Will I been the same person now if I went back to the past? Or is it just me. I sometimes wonder why can people do it while I can't. Or is it I grown to a age when I can't do it. When I lost all fantasy and too much reality in me which makes me not dare dream like in the past. In the past I would had easily said yes and commit to it. And do risky "things" in life which for love which I lost faith in. I know it sounds silly and I am behaving like a school kid. Oh well, sometimes things just runs through my mind.