Instead of spreading yourself thin into too many markets, specialize in one market and become the best trader there. No wonder great traders specialize in certain markets and then become the “biggest traders” or the whales in those markets.
Confidence in trading comes not from arrogance (although sometimes it does come from there, too), but from experience. Knowing as many ways to lose your money in a particular market will only show you as many ways to protect your money in trading.
If you limit your learning curve only to ways to get rich quick, you will only end up finding fast ways to go broke fast. Change your way of looking at trading and embrace your mistakes. This is the only proven way to lead you to success.