To view one's life, situation, or circumstances with a generally optimistic and cheerful attitude; to focus on what is positive in life. My mother always told me to look on the sunny side of life, and I have to admit, it helps when I'm having a rough day. I've had a problem with anxiety and stress, but lately I've been trying to just look on the sunny side of things. Life's too short to worry about every little detail; I say, just look on the sunny side and have a bit of fun!