Quote-Attitude

So I was cleaning out my room and I found a quote...


We cannot change our past ... we cannot change the fact that people will act in a certain way.  We cannot change the inevitable. The only thing we can do is play on the one string we have, and that is our attitude. I am convinced that life is 10% what happens to me and 90% of how I react to it.  And so it is with you ... we are in charge of our attitudes.


My mom gave this to me but I don't know who it is by.