One of the things I consider when facing the reality of aging family is to count.
I am 22, my parents are approaching 60, I live a fair distance from them, and I spend only some time with them every year.
If the average human lifespan is 81 years, you can count the remaining times you have left to spend with them.
Once I counted my number, one of the things I try to understand is that I have less time for many things than I think I do. I am aware of this, I try to be grateful, and awake. I try to maximise the time spent, and minimise the stupidity and unnecessary suffering because I do not know when this opportunity is going to disappear.
20 years sounds like a lot. But how much time is actually spent together? Counting adds perspective.