Perhaps the cause of depression is psychological, perhaps it is physical. Whatever the case may be, depression can be treated. For me there is humiliation involved in having to take medication to keep me calm and balanced. But untreated depression is much worse. The side-effects of antidepressants are most unpleasant but they gradually diminish.
Perseverance brings positive changes.
Recovery from depression is very slow. There are many ups and downs. People expect instant recovery but it does not happen. Each day still can bring moments of anxiety and darkness. And then it takes courage to walk again.