You are in a painful place. I am familiar with this place. It may not entirely pass but the intensity will ebb with activity and time---what do you do to stay healthy?
With your great empathy and love for others, I think two things---learning contemplative techniques (not easy) and physical exercise may help to balance things out. and, if you are able, you might consider focusing your desire to help (eg: peace corp, local food kitchen, other---a place you can, with others, make a difference one person at a time, one day at a time, and in doing this you are also sending those ripples out that a stone dropped in still waters creates, you will be affecting people you don't even know in a good way by the small stories those you help tell, whether they know you or not. And, in the moment you will be effecting positive changes. Hang in there.