Vacillating like a pathetic worm

Here is something I learned, both in therapy and by a Buddhist. They were worded differently but amount to the same thing.
Therapist "Treat everyone the way you want to be treated. Including yourself." 
Buddhist "Practice love and compassion to all. Including yourself." 
Why are you harder on yourself then you would be to anyone else you love?
Love yourself, be kind to yourself, forgive yourself. 
Be patient with yourself.