I can't imagine what they would say now that I have failed miserably.
Just let me say something here, failure is a good teacher. I've failed at things in life and discovered things that I never would have if I hadn't. Also have been in a similar situation to yours, where I didn't want to see my supposed successful siblings.
They indicated for many years how successful they were, yet in many ways they were not. Each of my siblings with the exception of one, have several failed marriages on their rosters. Almost all of them are alcoholics, most are in a great deal of debt even as they near retirement.
Slogged along at many low-paying jobs and some high-paying ones, living frugally but well. I have no debt, own my home and car and have consistent income. It took awhile, but I don't regret any of it. I encountered some pretty interesting people along the way, put myself through school. No matter how many times my family called me a loser, I've ended up in better shape financially and psychologically than they have.
In the end, my husband and I are happy, content, and get along well. So there's something to be said for intelligence and making/having certain choices in your life. You haven't failed, comparing yourself to others as an individual is not an even playing field. There's so much more there inside, that you need to consider. You are rarely what they think you are, some of the time family gets it wrong.