Empathy and compassion are often used interchangeably as if they were the exact same emotion. However, they represent very different emotional responses. One of them is sustainable and healthy, while the other can lead to dysfunctional relating and profound burnout.
Your mind isn't a single entity that just needs to "try harder." Instead, it is made up of sub-personalities, or "parts," that are constantly interacting, like an internal family.
A 2013 study published in the Journal of Clinical Psychology found that EMDR significantly reduced PTSD symptoms in combat veterans after just six sessions.