When people judge each other, and themselves, they usually use normal meaning average. No one is average. It is TOTALLY IMPOSSIBLE to be average. That is why it is so tempting I think to try to be. We try what is actually not possible. But at the same time we think it should be the easiest thing in the world.

I don't at all see being healthy as being normal. Many, many people have succumbed to illness through the history. For me, healthy is an ideal. Sure I would be happy having a body not attacking itself, but I'm pretty sure my immune system is not abnormal, it is just a variant that happened not to match the environment I was born into. I don't like to use the word normal when I mean healthy, and I like it even worse when it is used about say my financial situation, which is not "normal" in that I can't go buy whatever I want (which oddly is seen as normal at the same time loads of people are hungry every day).

If you want a crash course about normal meaning average, I like what Michael says about this. If you want to skip, watch the beginning up to 40 seconds and 8 minutes until the end. Two minutes that might make you feel better about yourself.