I'm not yet skilled in trading so I prefer to keep my job and go for swing trading first while still learning. Experienced crypto traders can make a lot because already marters the art of trading and they can afford to quit their job to go full time. Going full time means you already studied and mastered the necessary technical indicators and tools that mostly used in the trading.
We never can be sure that 100% successful in trading so you need to keep saving money from your job and work at the remaining spare time sure you can make lot of money like the people who are doing trading full time but only need is that you need to keep money to survive if your money from cryptos lost.