I don't advise people with no form of job for a reliable income source to in the main time avoid trading if they can because they can't survive it having to depend completely on trading to make earns meet. You would always be be vulnerable to emotions because you wouldn't want to lose your only funds when you don't have it knowing where another funds can come from. There's no how you wouldn't lose in trading irrespective of your expertise or many years of experience but you would do better when you have other means of income not depending only on trading as that would always fuel your emotions when trading.
I wont advise anyone who still works at a regular place with fixed amount of salary to still go into trading. And also someone who lives on paycheck to paychec. Only those with business, that can easily recover their losses when they lose should be comfortable taking the risk of trading. My reason for saying this is because, there was a colleague of mine, who works at a Coca-Cola shop, he makes some good bucks a month and then he venture into trading. Every month he cant give an estimate of what good use of his money. All goes into trading so he has to wait for paycheck the next month.