So it seems like you've lived life in your sister's shadow, and that's been miserable for you. It's easy for us on a forum to laugh at you for wallowing about it, but if you've been downtrodden the whole time by parents, other family, etc. always lauding your sister while you struggled a bit in comparison, then I sort of get it.
But you are 31, not 13. The only person to solve this in your head is you, have some respect for yourself and stop blaming things on her. Proper happiness can only come of your own doing. If she went bankrupt you might feel better about yourself for a day, but it wouldn't actually improve your life.
Stop telling yourself you're too old too change, stop pretending the only thing holding you back is her success and the fact you felt like you weren't as good, start thinking about yourself.
You are the problem here, not her. Some people would have been spurred on by a successful sibling, rather than allowing themselves to be held back. You are the one that needs to change, not her.
It has effected me all of my life.