Why do I struggle with self-Metta while my friend struggles with difficult persons astrologically?

I have also become aware that the most difficult aspect of the Metta practice is sending love to myself, but my friend has the most issues with the “difficult person" step. We are totally contrary in our struggle. I am thinking whether this particular field of emotional weakness is predetermined by my core personality structure which is demonstrated through my birth chart. Is there anything astrological that would indicate a change making it easy to accept myself with my unique makeup? My name is Alia, DOB 12th May 1990. Time: 6:20 PM. Location: Bhopal.