Be aware of that little devil on your shoulder
The final - and maybe most important - Love Lesson is banishing that little devil on your shoulder that talks you down. You know, that negative voice that whines on and on telling you things like you're not attractive enough, you're a failure at love, no one's going to ever want you, etc.
When your internal dialogue - that little devil - consists of all that negativity it's hard to hide it. And whereas confidence is highly attractive, a severe lack of confidence and lots of insecurity that you're not good enough for love is a turnoff.
Challenge that voice whenever it starts. Stop it and start telling yourself that you have loads to offer and that you will find love.