Answer:
As we grow, some traits and characteristics we have might change. There might be good and bad changes. As time passes by, we realize our mistakes but it is too late to correct them. We drown in regret but deep down, we always forgive ourselves. Nevermind the pain we suffered because in our mind "I was young, i didn't know what I was doing" so we bury the past ir order to find our new self who learned from those mistakes. As we grow older and older, we seldom remember our childhood life. We want to go back so bad, but we can't. Therefore, we will just bring back our young us because we love the nostalgia it brings to us. We should enjoy our life, especially while we are young.
