CJ
Your objective semi-troll
Well the initial topic wasn't too clear. What is non-successful? Being a bum? Being in school FT? Being at a job that's not your career? I see OP said that he didn't mean success as in money. That changes things a bit 
But yes, atleast be on a path to living a comfortable life before even considering marriage. That'd be the short answer.

But yes, atleast be on a path to living a comfortable life before even considering marriage. That'd be the short answer.