Pain is nothing but a series of ever-growing rooms. We all start off in a small room, sometimes a broom closet or maybe even the crawl space. It’s in room one where we learn about scraped knees, broken bones, bruises, and illness. Once we've learned about the beginning of pain we move forward into the next room.
It’s a lot like the last room, only bigger and harsher. Again the process is repeated but with heartbreak, betrayal, depression, self-harm, and anxiety as the key wounds of room two.
Once those have been conquered room three becomes available. Theft, ****, attempted suicide, and addiction reside in its musty corners. And again we familiarize and learn about these mounting pains broadening our empathy.
Of course not everyone follows the same linear path. People end up jumping from room one to room three before even setting foot in room two. Others might find themselves having to double back to the same room over and over again.  
The furthest I've ventured is room three. Every day I find myself pacing within its four walls trying to make sense of my hurt so I can move onward to room four. I’m not even sure I want to though. One room leads to another larger room. The only difference is the severity of the pain.