Yes, as far as i think so that the forex trading can definately make we people smile. Rather, i will say that the forex has the capability to make us laugh and not only laugh rather laugh like the 'Mad' people (kidding).
As we know that many people who sometimes may not have a big capital amount for investment. They can start their trading with a small amount and can really earn a very good percentage of profit from it. Provided that if they are capable of doing some following actions in a better and accurate manner.
1.) Good experience of working at the 'Demo' account.
2.) Very good capability to learn from the mistakes specially their failures.
3.) Try to learn more and more about the forex trading.
4.) Good Money Management Strategy.
5.) At the last but the least, very good capability of analysing the markets.