Pain that comes and goes of its own accord is like a familiar, but uninvited guest. Usually at your door, when you’re having a bad day. But really there’s no way to anticipate their unexpected visit.
So, you accept the unexpected.
You hold the door open, and let them in because keeping them out means more pain and they’ll get in anyway.
So, you accept the inevitable.
Then despite every attempt to get rid of them, they never realise they’re not welcome, even for a day. Then they stay a week!
So, all you do is hope they’ll leave soon.