Afraid that the good times in the past won’t happen again, doesn’t want to let go
Wanting to go back to the good times in life and get away from the struggle of life.

Looking at the past like it was and will be the only good time.
Time is the hour glass that cannot be rewinded
Focusing too much on the past and not allowing yourself to move on.

Talking to some one who has given him hope
All past events both good and bad

The pieces are the past mistakes
You always have time to make your future what you want it to be
Stop dwelling on the past and put it behind you
Some one who has inspired him is the reason he believes the best is yet to come

The “you” in this song is left to be interpreted by the listener. It could be anyone or anything that inspires you to move on. A religion, A friend, a parent, a sibling, or anything else.
I find religious meaning in this song.