Firstly, you cannot use Bitcoin as your primary or sole currency, it would make it impossible for you to buy most of your daily needs, or you'd have to go through the stress of converting to fiat back and forth. Having said that, receiving your salary in Bitcoin is not really advisable, its a good currency/investment, but it's as well very volatile, and is yet to attain mainstream adoption, thus it's much better you receive your salary in your fiat currency, and then use the percentage you want to buy Bitcoin for investment purpose.
Please, what do you advise I do in other to hold at least 80% of my salary in bitcoin?
Isn't holding 80% of your salary in Bitcoin investing far more than you can afford to lose? Mind you that your investment should be something you can afford to lose.
Very valid points made here. Never invest money that you can’t afford to lose, is the first and most crucial rule. And unless you live in El Salvador, bitcoin can’t be used as your primary currency.