- “You can’t be optimistic with misty optics.” (Charles Feinberg)
- “You can’t roller skate in a buffalo herd. But you can be happy if you’ve a mind to it.” (Roger Miller)
- “People are just about as happy as they make up their minds to be.” (Abraham Lincoln)
- Behave the way you want to feel. (me)
- “If the grass looks greener on the other side of the fence, start watering your own grass.” (Bayless Connelly)
With regard to your quote:
Behave the way you want to feel. (me)
Actually, my mother told me that many years ago, and says she heard it from her grandmother.