if it is possible so why people choose to quit it?
Possible to become rich trading...sure, of course. -- Probable, well not as easily likely.
People never quit trading, or any money-making venture, if it truly is a profit machine.
The people who do quit...quit because of either failure or death, or some other forced reason.
You should study all of the really, exponentially profitable traders in history. To kind of grasp what they were doing, and their loose strategy and general frame of mind.
To become "rich" in trading, you have to really embrace risks...because risks opens the door or window to potentially great rewards.
Once the window or door of opportunity is open...you need the skill to steal the loot inside, the ability to leave unscathed and undetected.
Most people are basically scared of the word risks.
To get rich in trading...you have to throw conventional wisdom out the door...and most people here at ET...are conventional wisdom.
Most people here at ET are happy if they simply outperform the market index by a couple of percent annually consistently....which is laughable performance, if you ask me.