The only part of my hair grooming that is "for myself" is trimming my mustache so food does not get caught in it.
Everything else is is for looks and other people look at me much more often than I look at myself. Even when I see myself in a mirror, I try to see myself as others would see me. My wife is the person that looks at me the most and is the person whose opinion is most important to me, so I ask for her opinion about how I groom myself.