A light heart lives long.

Set your heart on doing good. Do it over and over again, and you will be filled with joy.

I'd rather be an optimist and a fool than a pessimist and right.

My view is that at a younger age your optimism is more and you have more imagination etc. You have less bias.

If you get No as an answer, remember N.O. means "Next Opportunity". So Let's be positive.

You'll never find rainbows, If you're looking down.