D.D.
I have a couple chronic conditions that cause pain and it's easy to fall into depression because of it. Here's what I've learned over the years:
I can not control all aspects of my disorders and the pain they cause. The medical doctors can only do so much and anything they try is not always going to work exactly as I would like it to work. The only thing that really is in my control is how I choose to let this effect my life.
I decided early on that I was not going to be defined by my disease. Instead it was going to be something I was going to deal with on a daily basis. I take responsibility for the things I can control (like my weight, diet, and exercise) and work on modifying my daily activities to accommodate my pain. I'm in the fight every single day to live the life I want to live.Some days I win, others not so much.
Don't be a victim. Be a warrior.