Right on. The depression bit sucks.
If you can play nice with others though it wouldn't be impossible.
Get a team together, maybe even consider the indie studio route.
Set some goals, work on one at a time, achieve the dream.
Not to say it would be easy but effort/work ethic, and continuance/consistency would be key.
I think it's fair to say with anything you want done..
To plan it out and see what all it would take will make or break your passion for it.
Might take more than one try, have fallback options.