Successful trader is a realist.

Unstructured environment of the markets makes it easy to develop fantasies.
Many losers do not know that trading is intellectually fairly simple.
A loser is not undercapitalized, his mind is underdeveloped.
The market is not your mother. It consists of tough men and women who look for ways to take money away from you instead of pouring milk into your mouth.
Trading is the most dangerous human endeavor, short of war.