Best advice I've ever received

This is only a list of "so far" as I am always open to new advice.
  1. At my high school graduation I had some photobooks and after looking through them, my Grandpa exclaimed how happy it made him to see me smiling and happy in so many photos. He said, "Make sure you smile and enjoy every day, because one day you will look back and regret any days that you didn't."
  2. Be your own boss.
  3. Other people's actions or words only affect you as much as you allow them to.