Multi $1m “Show Off”

I’ve been very successful in my business and am now a multi millionaire.
All my close friends don’t have much money. I help them out financially and give advice when asked.. I believe they think “she’s good with money and I’m not”.
In British society people think it’s bad taste to talk about how much you earn, so they don’t know how much money I have. I am buying property but choose to hide this from them. Yet I feel frustrated that I can’t tell them about my success. I want to tell everyone about it because I’m so proud. It was hard but good fun getting here. It’s part of who I am, yet I feel it will distance me from my friends. So I would prefer to keep this quiet. My choice I know, but I want to ask why I feel this deep desire to tell everyone about it and the fear of being a “show off”