Here is what describes my life's philosophy in short:
To know the road ahead, ask those coming back" ~Chinese Proverb
You cannot manage time. You got to manage yourself, more specifically your mental, spiritual, physical and emotional energy.
Give me six hours to chop down a tree and I will spend the first four sharpening the axe. ~Abraham Lincoln
... and you got to do it now:
"For what is your life? It is even a vapour, that appeareth for a little time, and then vanisheth away. " ~Jas 4:14