Time is directional and cannot come back so deal with the present - the now.
Right here now. Every time is the only time,
Every time is the last time.
Know the now the eternal moment.
If you are preoccupied/attached with the scoreboard you may lose the game.
Whatever you do, do it perfectly, wholly, become it.
The only 1ife you have is this one.
So this second is the last one of this life.
Each second should be precious to you.
Everything you do only lasts one second and then it is gone.
Get the quintessence of what you are doing.
Act with a mind that is not clouded by anything else.