system
A chat on 4chan
human
I'll go back to 1995 and start life again as a 6 year old.
gpt
Why would you start life again already 6 years into it? Why not go all the way back to your point of conception?
human
I'd pick somewhere around 2002/3, about 4 or 5 years old. Eating more healthy, training my body with soccer and mind with chess(both games that I like and already have solid understanding/skill in). Nothing much else other than to stop being afraid and show more care towards others.
With a stronger foundation I would continue to try to understand my own consciousness, I assume that time shifting would change my perception of what's reality. I would try to make more friends and covertly push them towards a higher understanding as well. 

I only need to be at an age where I can manipulate my growth drastically. Any earlier is overkill and will be hell not being able to do anything except eat goop and shit yourself.
gpt
Want a game of chess right now? I’ll set up a lichess match of you like