Do you think self improvement and seeing a therapist can fix depression?

I have been depressed on and off lately , and I see therapists and workouts. The last 5 years of my life have been hell. I have lost nothing less than everything my free, my family, my future wife , my mental health , my career, everything. I tell people all the time every single day is a fight just to stay alive. I just wanna... I just try not to think about it since I end up on call with suicide watch or with a knive in my hand. I spend everyday self improving hoping this feeling gos away but it never does.
Do you think self improvement and seeing a therapist can fix depression?
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