“There’s a quick and easy way to test whether an activity involves skill: ask whether you can lose on purpose. In games of skill, it is clear you can lose intentionally but when playing roulette or the lottery you can’t lose on purpose.”
— Michael Mauboussin
Working harder and smarter can improve your skill and likelihood of trading success. But in the end, it’s still to a large degree up to luck.
Just don’t ever make the mistake of believing your good fortune means you “know” the market.
Wishing you the best of luck,