What do you wish new-comers would focus less on? (Hair split/whittling and mirrors)

Mine are in the title. Pic for gate keepers I guess?

What about you? The hobby can be stressful at times, I get sad when they define their success by a niche task that doesnt improve long term performance and give up entirely.

(Work sharp p200 & p400 diamond belt to homemade 1 micron diamond emulsion on paper).