Hi Akram,
I suffer from depression because my daughter is facing a lifelong chronic illness. I will tell you a couple of things that I've been doing to help myself. Some days are extremely hard, and I know this might sound a little too simple, but it's working for me. My doctor pointed out that I need to start doing some of the things that I enjoyed before the depression hit. One of the things that I enjoy that I stopped doing was exercise. I also stopped reading and most of the other things that I got enjoyment from. I wanted so badly to get off of the medication, so in talking with my doctor, one thing I had to agree on was get into a good sleep pattern, exercise, and do good things for myself...to create a healthier me because I cannot be there for her when she needs me if I'm running on empty. Sometimes I have to force myself to exercise, but I swear, that is what's turning this around for me.
I go for a jog 3 days a week and try to hit the gym a couple of times too. I tell myself when I first start, that if I don't feel better in 10 minutes, I'll quit, but the fresh air always makes me feel better and really lifts my spirits. Sometimes if I don't feel like a jog, I walk. I also use this time to talk with my creator. I use the time alone to ask for help, or praise Him for the good things in my life, no matter how small.
I don't like taking medications, but do have a hard time getting to sleep at night sometimes, so my doctor suggested melatonin. It's a natural supplement that doesn't leave me groggy, but allows me to get a good nights rest. I'm also trying to eat better, more nutritious food. You can't make good decisions if your mind is clouded by junk food.
This is a choice, I choose not to let depression get ahold of me like it did. I choose to stop the negative thoughts and take control of my life. I know, easier said than done, but I'm trying not to be a victim and be more in command of what I do with my day. It's a real sense of empowerment when you can look yourself in the mirror and be proud of the things you accomplish.
I think Kitt is right, your company might be understanding now, but how long are they going to hold onto your position while you struggle? I would listen to your doctors, try to exercise, try to shift your priorities to be a better employee...it will be hard, but some things are worth working hard for. Your well being is worth the hard work that it will take to get you back to liking who you are when you look in the mirror.
Hope some of this helps!