Sympathetic Joy is the third Brahma Vihara, and it is to feel happy for others without judgement, bitterness or resentment.
I remember saying to myself- I am happy for them but sad for me, as I do not have what they have. Not realizing that by doing this, I was ignoring all that life had brought to me.
In choosing gratitude, and abundance mindset for all I have been given, I no longer pine for what others have, and sympathetic joy flows easily and unconditionally.
Next time a friend or loved one shares how wonderful their life is right now, dance with them in the joy, and bring your own joy to add to the mix. After all we each have our own story line and design by which our external life awakens our inner self.