I think it's quite complex, and superficially I could say that whether you can sell to live or survive depends on what the case is, but what makes the difference among the crowd is our relationship with money, whether we know how it works or not, and how we use it in our projects, since we almost always live day to day, week to week or month to month, repeating that cycle tirelessly... On the other hand, you mention that your father worked for a long time in sales and made money during his working life, now the big question ❓ is this. Today does he live thanks to what he worked for? Did he have anything left from those years of work that sustains him today? Or do he still have to work to cover his expenses?