There is a beautifully sad story about time wastage: it makes you believe you aren’t wasting it.
Here’s the way to avoid it in the first place: schedule.
Schedule your day.
Schedule even your leisure time.
Own your calendar.
Even if there are times when you want to sit randomly and “do nothing”, schedule that as well.
It will make you escape the torment of life wastage. An asset worth striving for.