Being likable is a skill like any other, and it can be learned, practiced and mastered. It begins with stopping your own destructive thoughts, recognizing the lizard brain in yourself and taking an active role in your verbal communication and body language. 

As an active participant in your own thought stream, you can start to control the underlying messages you are sending to other humans. 

And once you recognize that all those other humans you are dealing with are the subject to the thoughts of their lizard brains, you can begin to manage the lizard brain to lizard brain communication going on subconsciously.