Hi Ferdi,
North America has a very particular attitude towards depression. We glorify happiness to a point where anything else is abnormal. Depression is a catch all for a lot of different things. Sorrow is a normal reaction to a lot of life. I read that it is actually a good barometer of spiritual awareness. Life is difficult. When I spent time in Turkey, melancholy was perceived as normal, and at times, respected. You could be sad, share your pain, get hugged, accepted, laugh, dance, sing or cry. It was all normal. You did not need to pretend. With the pressure off you had time to be. We are in a conflicted world and it can wear away at you. Sometimes it pushes our bodies and chemistry to a point where medication is needed to help with rebalancing our systems. They do not always stay effective and we need to revisit our doctors to try different medications. We would do it for blood sugar control. Brain chemistry control is also valid.
I would also say that joy and happiness are different. Joy is something that is deeper, more of a bedrock foundation. I think sometimes our society pushes happiness for their comfort rather than our truth.
I also suffer from depression and anxiety. I also know joy, humour and love. I have learned that all the things that make me who I am, are valuable. During times of depression I learn to listen. In times of anxiety I turn to God and learn about trust. I see my shortcomings and His strength. Will I ever be without some depression? I doubt it. I am eastern European in ancestry and it is more common than not. I have peace with it. In accepting myself I have contentment and gratitude. I see beauty, love laughter and seek out those who need connection. I appreciate things deeply and richly. The stigma for depression needs to stop.
All the best to you brother.