I find it rather rather odd that certain people fall out of bed one day and say to themselves "I want to be a trader!". It is not a profession that you select. More likely, the profession selects you.
There is an incredibly high wash out rate. Anybody who has worked in an institutional setting has seen tons of people "move on". Those who have "made it" tend to become more conservative allocators of capital and refuse to admit to anybody (except maybe themselves) that they may have just experienced a string of good luck. Additionally, these guys know that just 15-20 years ago, the guys who got into trading where the ones who couldn't get into institutional sales or research. In any case, most end up in operations or IT after washing out.
So please if you have a child or young relative say that he wants to be a trader, kick him in the nuts and tell him to become a lawyer.