yungerman,
it is ok to teach alef beis after you learned alef beis (heard from R Shapiro Z’L). A corollary – do not teach alef beis before you learned it!
Similarly, here the point is that only after a person realizes his own deficiencies, tries to fix them, and realizes how hard it is, he is ready to thoughtfully approach other people. Otherwise, you’ll have a silly person who did not examine his own middos pompously telling others how to live their lives.