When I was about 18 years old, I had a philosophy class where the teacher said this quote: "Things over which you do not have power should not have power over you." It could also be read as "control the things you control, ignore the rest".

That lesson really spoke to me. I put a lot of effort integrating it into my personality and I must say now, almost 15 years later, it made my life so much more enjoyable.

I used to get mad, really mad about stuff or get stressed about stuff out of my control, and I could never really remove those feelings. These words kept coming back to me and through some effort, I must say that I can more or less apply them in my everyday life now. It saved me a lot of trouble on various situations and has helped me break through problems way faster than I would have in the past, simply by helping me identify the things I could change and focus on those things.

I'm curious about you guys and your life stories. Has any lesson had as much impact on your life?