In investing, extra effort tends to correlate negatively with results for the vast majority of people, with some exceptions such as Renaissance Technologies.

investing is one of the very few Endeavors in life where the harder you try the worse you're probably going to do and yes there are exceptions to that Renaissance Technologies of course you you you can name the exceptions for people who tried very hard and did very well but for the vast majority of people there's going to be a negative correlation between the effort you put into it and the results that you got out of it