Fulfill every day

Last night, I had one terrified dream, which made me have the feeling of death.
I woke up late at 11:30 (usually I don't sleep so late) thinking how important it is to cherish every moment we can live on the earth, or we still have the ability to breathe.
Therefore, one phrase comes into my mind "fulfill every day".
If I would die at next moment, I have to do no-regret things...but it is so hard to remember this important concept.

btw, the feeling of death is quite real that I almost thought about I "was" dead!