The day I quit my job and started treating trading like a business, was the day that I'm still trying to forget. This is a very wrong approach because when you treat it like a business, it means that you work 24/7 on this. When you work like that, you have to give up on your job and totally focus on your "business". Then you are not always guaranteed to profit and sometimes lose a lot, then this messes up with your mind and creates lots of negative thoughts in your mind and etc... I've experienced this myself and I know that it's a very wrong approach. It's the best to invest in Bitcoin when you think it's the right time to invest, hold and wait. Don't do day trading, trade once a year, twice a year or even once per two years and this way, you'll generate much more profit with much less stress.
You're more pressed to make profit as well, since it's a business. As for me, the thing that works best with trading is just waiting for the best opportunity and trade only at that time, by this strategy I rarely lose too much and frequently making profit.
But ultimately nobody can become master of trading, it's trial and error, you can lose and you can win, that's just how the game is.
If anyone thinks they can trade flawlessly without losing anything, good luck because that's just wishful thinking.