I think, that the fact, that 99,9% of the traders (all we know) are not able to make (lets say) 100% of constant growth a month for several months, is not a proof that such people do not exist.
I suppose, that with a good method is possible to achieve this in the beggining in the bucketshop.
After You have, lets say 100k-1mln of capital (EUR or USD) it is very difficult to keep the pace, because of the liquidity issues.
But we all know - there surely were individuals making enormous (more that 1000%) profits on average year of their career and these guys were not simply lucky, but devoted all their time to trading and learned for many years.
They were all connected with passion to the market play and specific character properties. Most of them were balancing on the limit between insanity and genius.
Lets think of a modern ultra-trader Linda Bradford Raschke
(
http://www.lbrgroup.com/index.asp?page=DefaultPage)
In " The New Market Wizards" You can read an interesting interview with her:
"Linda Bradford Raschke is so serious about trading that she traded right through the last day of
her pregnancy. "You didn't trade while you were in labor?" I asked her half-jokingly. "Well, no,"
she said, "but then again, it was four A.M. and the markets weren't open. I did, however, put on a
trade about three hours after I gave birth to my daughter. I was short some currency contracts that
were expiring that day. It seemed like such a good trade that I couldn't bring myself to give up the
opportunity of rolling the position over into the next contract month." As I said, Linda Raschke is very serious about her trading."
She treats trading like playing an instrument, she has fun and makes a lot of money.
That would be my objective too, but with a slightly different attitude - rather beating the market and solving a mystery for the satisfaction of the challenge.
Not mentioning that with a lot of money, You can do many good things, giving help to other people and widening Your horizon to some actions, more difficult than making 1000% a year consistently. Some of the targets simply need giant sums of money from the begining to the end and proper management for the rest of one's life.