That's why I don't believe on such superstition since see so many times newbie lose their money on their trades. Those immediate gain by other newbie is just part of their luck and this will not occur to other people.
Maybe they just buy that belief since some people want to attract new player and maybe take advantage of something they can get from those newbies. To lucky for your friend to win huge but what I really think those words said by people is just an expression for the winnings gotten by newbie people they know.
Some newbies need to be taught the hard way about how the market feels when a person is confident and has too much confidence put into his positions without the markers intact.