That is wonderful. Having a notebook full of quotes that can cater to your mood or what you are feeling is really nice. My favoured quote is something my parents have repeated a lot during my childhood. The golden rule, "Do unto others what you want others to do unto you". The author seems to be debatable, since a lot attribute it to Jesus Christ, while some to Confucius, and others to the Egyptians. This quote has shaped how I interact and deal with people.
That's not a bad concept, one I approach slightly differently although the premise is similar. A good one to bring up for sure.