Hi,
Its interesting that you bring-up this topic. I have always had problems with cleanliness, and had many people complain about it. I'm an early/mid. aged teen, and have had my mother, and family friend talk about how a teen could be so uninterested in taking care of his/her hygiene. And how a teen should be, essentially, obbessed with his/her hygiene, and partly to appeal to the girls/guys.
I also have had everyone else complain about my hygiene, include my brother, father, peers, etc. The reason I don't like taking showers, brushing my teeth, etc. is because I don't seem to get anything out of it. I find doing all those things a pain in the butt, and not worthwhile. I don't see a difference between me taking a shower and not taking a shower. People, atleast from what I notice, act the same, either way. And I may occsionally take a little "abuse" from others about it, but nothing that is enough to really be worthwhile.
I usually take a shower once every week, but now, due to pressure from my mom, that rate is increasing. Brushing my teeth, is essentially the same.
I'am not sure how you would get one to start taking care of his/her hygene, but for me, if my mother or father start to apply enough pressure, I will usually brake, and take a shower (and/or brush my teeth). Thats what works for me, but it still does not make me, automatically want to take a shower. I don't know how one would change a person's mentality so they would take showers, just by their own actions, or "automatically." If you know of a way, apparently, I sure could use it.
-- Andrew