You really think you'd need to sell your N64?
Wouldn't there be more tempting distractions just from browsing online than plugging in and playing games that are 15 years old?
Anyway, I remember how Persona 3 helped me through some tough times as well some years ago. I haven't really relied on games for anything like that before or since, but I certainly know how they can be a distraction regardless!
Good luck in your future endeavors.