My wife gave me a parable tonight and I thought I would share it with you. She said (my paraphrase, of course):
If you're sick, that is not a good enough reason to not take a shower and brush your teeth. Put a number of days together without a shower and clean teeth and you are likely to go downhill in a hurry. When you're not feeling well and you take a shower and brush your teeth, just by doing this you will feel better and your day will feel better and everyone around you will feel better. So, when you're not feeling well, take a shower and brush your teeth!
It probably has a lot of different applications. I will let you decide how to apply this tidbit of wisdom.