The truth is hard most times to say because of the listeners feelings, yet it is necessary to voice it out, no matter how they'll feel at the end of the discussion. It is not right telling someone only the good things in an investment or trading (as we are talking of trading), letting the person know the two sides is the best thing to do for that person.
If I want to venture into something, and all I hear about that things is just bunch of good news, I feel there's a trap upfront which I'm not being told, and at that point, I become more interested on the negative side, so as to know if I can manage the negative effect when I start experiencing it. And this is same way I talk to people. Here's the good, this is also the bad, and if the person says, I'm very much interested, I'll tell them, take your time and process the information, because I won't be held responsible for any losses you might experience. Also, investing that which you can afford to lose is another term I use, so the person can have a free mindset, that there can come both gain and loss with the set capital.
Trading is very profitable and also filled with traps that can wipe out your portfolio, but as a newbie, you really must take out time to learn before you can earn. Otherwise, Lossing everything becomes the final result, which is not good.