The Stoics had a saying in latin:
ta ehp’hemin, ta ouk eph’hemin
What it means is literally this: “What is up to us, what is not up to us.”
They used it to remind themselves basically to control the things you can control. So much of worry and strife is worrying about things that are completely out of our control. It’s a waste of effort. The only things you should worry about are the factors that you have control over. Many times, that may be your response to the situation. Bad things happen to everyone, but you control your response to those things.
In the gym we fret about the results we are getting but the things we can control like being consistent, doing the best we can while we are there, we don’t focus on. What are behaviors that you can control in order to set yourself up for success? It may be gym related, it may be other areas of your life. I believe it’s critical to focus on the things you can control. You’ll be a lot less stressed and more successful when you.
I love this phrase and this idea.