"If I excel, I will be bullied"
or
"I need to bring things with me to parties/events because people don't value me for just being me"
Bringing a reasonably priced bottle of wine from a winery you like - nice and thoughtful. Bringing a bottle of Opus One - you're overcompensating.
It's overcompensating for years of not feeling like you are welcome, and years of only being acknowledged when you had a desirable item or knowledge, otherwise you were a person non grata.
Like if you're hosting a party, it's easy to obsess about there being enough entertainment, food, booze, etc, far beyond what's actually needed.