You are better than 90% overseas Chinese. What the heck...

I don't agree it's a failure, but rather another success besides your arch design job. The thing is you can't guarantee your success in China if you didn't come to USA. You can only make your best decision at the time you had to make, not afterwards. Of course when you look back you can tell good or bad, but you shouldn't regret that decision. Looking forward is what you supposed to do now.

Good luck!