In the past, when prices started to rise, I just thought it was a bull market, but after taking the course, I learned that there are multiple phases within a bull market.
Especially, the biggest change was that instead of thinking "it's going up = I should buy now," I started to first look at what kind of rise this current increase is.
My anxiety about getting swept up in the hype and buying at the peak like I used to has decreased significantly.