I LOVE this! Words For Teenagers - 1959 (As Parents, we must teach this to our children!) If only I understood this as a teenager. No matter how much my parents tried to drive this into me, I didn't truly get it.
All frustrations are self-induced. The outside world can invite us to become upset, but we ultimately accept the invitation. - Don't let others add to our frustrations. Choose to be proactive not reactive.