At what point would be a long enough time horizon that you’re able say you’re decent at picking individual stocks?

People always tell me don’t buy individual stocks you’re better off investing in an index fund, which is why im asking this question. I’ve been investing for almost 9 years, pretty happy with my results so far and have learned a ton along the way. In this account I leave a portion for swing trading (I’m a full time investor and treat this part as my active income), while the rest holding long term stocks. I don’t really diversify in my opinion I usually only hold on to no more than 5-6 stocks and it has worked out so far (these holdings have changed over time as I haven’t held any stock since I started investing). I like to research a ton and have high conviction before investing into something which has rewarded me with some pretty good gains. I’m not sure if I could do this with a diversified portfolio with a ton of companies, so I’m sticking with what has worked for me. I don’t know if I can continue to beat the S&P 500 but hopefully we can keep this journey going haha.

I wanted to post screen shots of my fidelity for proof but it doesn’t allow attachments so I copy and pasted from the screen shots

Your 1-year cumulative pre-tax return
+265.67%

Your 5-year cumulative pre-tax return
+508.80%

Your total cumulative pre-tax return

+3,273.12%
From Mar-06-2017 to Nov-26-2025