Eliminate the negative
Latch on to the affirmative
Don't mess with Mister In-Between
Song lyrics here.
This YouTube video is from The Singing Detective with Bing Crosby and The Andrews Sisters singing in the background. I am going to see if this old BBC series is available at my local library. It looks great. There was a 2003 (American) movie too but the English TV series looks way better.
I hope this brightens your Sunday morning and inspires you to accentuate the positive all day long!