I don't see my self at the level to convey my own thoughts but as the forum allows then let me place my thoughts.
First of all one should be very serious about trading , it should be taken as a career in which one should reach to a specialty level, just use common sense,
a doctor doesn't treat all kind of patients but he may be specialist in a cancer disease, gynae, paeds, orthopedic , oncology etc etc specialist, same trader is like a hunter, a whale hunter doesn't go for hunting lion and bird shooter is not going for dear hunting because all got different (i)Fundamentals (ii)Technicals (iii)Emotions and (iv)Sentiments (v)Seasons.
i think a trader should choose his style of trading according his personality and go for just a single instrument to become a specialist in it. It will be very difficult to trade all instrument in futures, stock index, forex etc. try to master market in a single personality (instrument) so one can speak and place his thoughts, in forex trading if someone wishes to go for EUR/USD trading then he should seek knowledge in detail i.e its behavior and reactions, after that use those fundamentals as its market edge (example lion hunter know where he can find lions by knowing their natural behavior to season, weather, environment and reaction to any threat or searching to be fed) and technicals as gauging indicators (like radar, barometer, binoculars and of course gun to fire). and use money management as a hunter use to have first aid box and emergency plan if lion escaped then he knows what he have to do by not waiting in hope that lion will stand again in front of him to be shot. and most of all peering his emotions with targeted lion so both breath as one.
in short to sum up one cannot go jumping around as crazy monkey and wish for success.
Rule 1 and last : Become a specialist in a single commodity.