I stumbled upon this YouTube video by Monk Nick. It is about the advice his mother gave him when he was going through protracted difficult times.
Basically, she said, life is tough. Things happen. There is karma. Life is "salty." We can't do much about things that happen. So, what do you do with all that salt? You add water.
You do good things. And keep doing good things. And that dilutes the salt. It balances things out. The pain lessens. I find this to be excellent advice.