It’s one of the most well known prayers – the serenity prayer. As with many Christian works, the idea had secular forebears and the earliest I’ve seen is attributed to a Stoic philosopher.
Make the best use of what is in your power, and take the rest as it happens. Some things are up to us some things are not up to us.Epictetus
I’ve been running at a metaphorical wall repeatedly, frustrated, determined to make my way over, round or through the obstacle. In all this intellectual activity I haven’t made any progress against the wall or indeed much else, with my energy so consumed.
What’s become clear, is that I must accept the wall as it stands.
Having turned the other way I can see plenty of things I can change that will make better progress with less effort. In time, strengthened by all the other things I have done, I will tackle the wall again.