I'm having trouble being myself?

[SMD]

I don't get it. I consider myself goodlooking & sociable, I have plenty of friends, plenty of women in my life, a job, etc... But I always feel the need to impress people. My social media profile pics are me with my shirt off at model shoots, I drive a nice car, ride a nice motorcycle. I'm starting to think I got my car/motorcycle to show off. I love riding, but idk. I always feel the need to one-up my friends and subliminaly brag about my accomplishments, possesions, and skills. I find myself trolling on online forums, living a fantasy, talking lies, etc. It's really starting to consume me. It bothers me, I can't help it though... I need help/advice
I'm 20 if it matters
I wouldn't say I'm insecure... In fact I'm very confident, maybe overly confident sometimes. But you're right, maybe I'm just a showoff