Keeping your source of income secret is the most essential behavior to exhibit because every business has their secret that make them ahead of other companies. When you are secret about it, people tends to remove their evil eyes on you rather you look like just an ordinary guy who struggles for survival, you only know how much quantity of Bitcoin accumulated in your wallet and no much noise about it.
It's also a bonus point if you are the type that has less friends and you don't go about arguing with them amount you have in your wallet, doing that is setting yourself a fire that'll burn on you sooner or later.
It is more easier to stay humble and keep your rich and bitcoin investment in secret at individual leve than at business level. If you are an individual investor, you can do your investment secretly and if you are aware about importance of privacy like "Privacy matters", you will not publicly tell anyone about your investment and show off your rich.
You will also not be ready for participating in public events that attract many Bitcoin investors, cryptocurrency enthusiasts and surely there are bad people there too. Your privacy lost forever after you lost it and you can not restore your privacy after it was lost.
https://www.lopp.net/bitcoin-information/privacy.htmlA Modest Privacy Protection Proposal.