Move to another country, change your identity and delete any digital trace of yourself. Problem resolved.
Step 1: Coinjoin to make your on chain funds private
Step 2: Fake a "boating accident" where you tragically lose the keys for spending those coins
Now your holding is a secret again
This works better against the government than people. They will watch your every move and any fair valued purchase will be proof for them that you are still wealthy.
One of the top security tips for holding bitcoin is not to let anyone know you are holding it as it will endanger both your life and your coins. Then this taught comes in, what if your holding is no longer a secret, how do you manage such condition? How do you secure yourself and your coins?
Step 1: Coinjoin to make your on chain funds private
Step 2: Fake a "boating accident" where you tragically lose the keys for spending those coins
Now your holding is a secret again