Have you ever used a mentally repeated phrase and had a positive outcome?

I was going to use the word mantra until I looked up the definition!

I need to wrap my head around something that is a reality in my life and with which I continue to struggle. (I’m struggling because it’s something I don’t like. But it’s still the reality and that’s where I have to live.) I had a thought that if I kept repeating a key phrase or sentence in my head that it might help me to come to grips with what I must.

Have you ever used a technique like this, or something similar? If so, what was the outcome?