This is a bit of a fresh thought to me, but it seems that the standard male self-improvement advice ends up in one of three buckets:
1. The activity is its own reward (lose weight, hit the gym). Even if it’s not immediately successful at helping one find a partner, their benefits are almost immediately self-evident.
2. Advice that is vital for sustaining a relationship but usually not the missing piece when it’s time to find a new one (listen better, lower the ego). They’re needed to get the second date but can’t help get the first date.
3. Advice for the sake of having given advice (read books by female authors).
“Learn fashion” is hard to place on here. On the one hand, ensuring that you comb the crumbs out of your beard daily and wear clothes that fit better than a garbage bag is essential. On the other, becoming “into fashion” when it’s not a natural interest is often more of advice for advice’s sake unless you’re targeting a very fashion-conscious woman (or the fashion-forward portion of the gay dating pool).