When Life Hands You Lemons, Make Lemon Aide
Pucker up baby!
This idiom means:
If something goes wrong or sour (such as a relationship turning bad or loosing a job) then try to turn it in to a positive thing. For example, if you loose your job, then use your free time to earn a degree or start a new business. So, if life hands you a lemon, pucker up baby and make some lemon aide!