Forgetting to live

Like this that I read:

"But those who forget the past, neglect the present and fear for the future have a life that is very brief and troubled; when they have reached the end of it, the poor wretches preceive too late that for such a long while they have been busied in doing nothing."

- Roman philosopher Seneca

Squandering the past:
The engrossed are so caught up in the day-to-day that they never take the time to look back. Their lives are like a bottomless well, swallowing up the past as though it never existed.

Neglecting the present:
"Present time is very brief, so brief indeed, that to some there seems to be none; for it is always in motion."

Fearing the future:
"Very wretched, therefore, and not merely short, must the life of those be who work hard to gain what they must work harder to keep." They spend their entire lives preparing to live.