Let's see how many different ways I can say the same thing
1. If by living forever we mean a feeling of timelessness we must get used to living in the present.
2. Do not worry about tomorrow; tomorrow will take care of itself. Sufficient for a day is its own evil.
3. Try to worry about the here and now, the future will take care of itself somehow.
-"Life in One Day"
4. The past is just memories; the future is just what we expect to happen. There really is only now.
-I forgot who said that one, actually
Do you get the point? Live in the present. Yesterday is gone and tomorrow is always coming but never comes.