Many traders desire to begin their trading careers by becoming experts in the charts, as well as in strategies and other related topics. The problem is that this approach fails the majority of the time. So, I firmly advise that you have some form of reliable revenue flowing in before you begin your trading career, regardless of the method. A skill, a job, or a career, perhaps. It will be quite difficult for you to concentrate and actually advance in this trading adventure if you don't have that, which is why. You need to anticipate that your emotional stability will be tested.
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I almost did this back when I saw that I'm profitable into trading a few years ago. It also come to a point where the profit that I'm gaining in trading is way more than my monthly salary on my current job at that time. I've been consistent in trading at that time, and I don't get much losses, and most of the time I'm winning. I'm trading futures at that time BTW.
They suddenly, Bitcoin went down massively, and I entered in a wrong position. To cut the story short, I got liquidated at that time, but the good thing is that, I already withdrew most of my profits at that time, so I only lost a little, but that liquidation that I got served as a lesson for me. It says that whenever you are winning consecutive times, there will still be a time where you will get liquidated because of entering at a wrong position. I didn't put a stop loss at that time which is my mistake too because I didn't expect for Bitcoin to go down massively at that time.
Overall, you can still do your job, but at the same time, trade. You aren't looking at the charts 24/7, and having multiple sources of income is always a good thing. Don't quit to your current job and focus on trading, because you will not know when you will lose your capital because of wrong entries. Like OP said, get a reliable and stable source of income, and then try to do trading, and after that, do it both at the same time.