you must have an alternative source of income by which your bitcoin investment can only be fertilexbti yield profits when you invested and doesn't panic it to grow else he may end up selling his bitcoin at lost having me to be blamed.
the dividends of his bitcoin assets would had be reliable to him after much he may have made some profits from it.
This is not about alternative source of income, but how much money he can set aside to invest which will not affect his monthly spending, this is why people who want to invest something need to have emergency funds.
Bitcoin never produce any dividend, if Bitcoin can produce dividend or generate more coins, it's clear you're hold your coins in centralized exchanges, holding in CEX is bad for security.