Once more but with Conviction

If you could do it all over again one more time, what would you change? How would you change the world itself? Jack Meyrs had it all, and then he lost it all. But, the world wasn't finished with him just yet. Sent back in time he would change it all, to lead the world to a better future.

Note:

This is go back in time story but with a small twist, our main character gets sent back in his future body, he will not live his life as teenager all over again.

I want this story to focus on relationships

No romance or harem of any kind.

Hopefully plenty of action

Please enjoy.