What is the best way to deal with people who think everything is a competition?

I have a cousin who is younger then me and he has this competitive steak. He managed to do amazing things such as get car, a house, great job and get married. Where as for me life hasn't been as easy. I'm working on getting my drivers license as I am scared of driving , I'm attempting to get a job with degrees and I'm 32 and single and female. I am trying but I keep thinking any family get togethers he's going to be walking around like he's the big I am. I am happy for him but I don't like the way he carries himself. I don't know how to deal with this type of person. With my older cousins, they have done the same things but they don't carry on like this.

What is the best way to deal with people who think everything is a competition?
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