I have come to know the mutability of all human relationships and have learned to insulate myself against both heat and cold so that a temperature balance is fairly well assured.
Life is like a bicycle; keep moving on to maintain balance.
Balance in large measure is knowing the things that can be changed, putting them in proper perspective, and recognizing the things that will not change."
It is the same with people as it is with riding a bike. Only when moving can one comfortably maintain one's balance.