It is understandable that most of the people don’t make money doing short term/day trading. There’s extraordinary knowledge and temperament required.
What is perplexing - even many (not most) investors too make very little money considering the risk that they take. Main reason ofcourse being the urge to do bulk investments at once (if its a jackpot, if not …well…seh lenge 
)
This article shows the difference between methodical and whimsical buy the dip strategies and is precisely handy for those who want to make money over a reasonably long run and it also shows with data how investing just periodically helped investors to stay above inflation during the worst period for US Stocks.