I always tell people, if you waste my time, you are clearly wasting my life.
I see time as an investment - An investment in people, in things, in projects, and as the case may be.
How I measure my time investment success is through the product or output of the time invested respectively and this helps me make proper decisions moving forward. Is spending time with/on this person, task, or thing productive or yielding productivity? This always helps me reevaluate friendships, projects, etc.
It's always a pleasure stopping by @josediccus