Nothing is forever
Uttered frequently as I realise that I've been in a new job for over a year, an auntie for over year and playing the bass for two and half. When you are in the middle of things you believe that they will go on forever in a completely unchanged manner but tend to forget how utterly things have changed from how they were before. Your band breaks up. You start a new one. Your job changes. You discover new annoyances and pleasures from the role. Your routine changes but you still complain about having to get out of bed so early.
In some ways that nothing is forever means that you need to worry about it less because you don't know what it will become or how it will turn out but know that it will be different to now.