Mostly True
As a general rule, I'm not all that fond of the book of Proverbs. Each verse needs to be broken out and commentated on for it to make sense. For example, consider Proverbs 17:17:
"Friends love through all kinds of weather, and families stick together in all kinds of trouble."
I give this one a true-ish score. Families, ideally, stick together in all kinds of trouble. But I've seen up close and personal how a parent can teach that to a child but not be able to keep that kind of commitment themselves.
It is lovely to think that people can handle the ups and downs of life, and a few can. But many cannot. We need to tell ourselves the truth about this - especially as it applies to our own boundaries. There are things that I have decided I am not willing to stick around for anymore. Am I selfish? Am I a bad person? Maybe. But it is also possible that I am learning more about what it means to take responsibility for my own choices and decide for myself that some things are just too much for me to handle.
Maybe you can handle more. Awesome! Maybe you can handle less. Nothing wrong with that! But in all these things, it is important to tell ourselves the truth about what's going on with us and own our choices. I find it so interesting that people often place expectations on others that they would never require themselves to live up to - pay attention to this! This will help you sort through your options.