There’s various “game dynamics” in life; closely related to Rate-Limited Long-Lead Time (RLLLT) dynamics the is the dynamic that’s pervasive in both finance and fitness where discipline in sticking to the basics is actually all you need. This also ties to the idea of “figure out the price of X, then pay it”.
For fitness - basically everyone wants to be healthier and look better (no judgment!). The price to pay is simple: eat a healthy and balanced whole-food diet, get into a healthy sleep rhythm, get some cardio in and lift weights (following a professionally-designed workout routine). The same applies in finance - basically everyone wants more money, all you have to do is spend less than you make, and invest the difference into a low-cost, target-date index fund.
There’s certainly room for additional nuance, of course. You could set up tax-advantaged accounts and go to a 3/4 fund portfolio and optimally house the right funds in the right accounts for better tax efficiency, build a credit card strategy, etc. In fitness, there’s periodization, getting a mix of Zone 2 and HIIT cardio, DEXA scans and sleep tracking, etc. But none of this is fundamentally as important as just being consistent in the basics; the returns from added complexity are low. In fact, taking things too far in the endless desire to hyper-optimize can actually backfire: you could go too deep down the supplements rabbit hole and start taking supplements that have limited scientific evidence on their efficacy (that’s assuming they’re even manufactured well). Following the market too closely could cause you to panic-sell or start picking stocks under the delusion that you’re somehow the next Warren Buffett.