I like lists so let's go for it:
1. I'm more outgoing
Except in certain fields (rads, path), you just can't be as good a doctor if you're not at least somewhat outgoing. I think introverted doctors come off as cold or aloof.
2. Sleeping with a pager wrecked my sleep
I used to be able to sleep through my husband snoring. Now I can't.
3. I'm a much bigger hypochondriac
I really wish I didn't know the worst possible case scenario for every illness.
4. I'm more humble
Because I know that there's no way I can know it all.
5. I've gone from being incredibly squeamish to feeling like there's nothing so bloody or disgusting that I have to look away
Well, except maybe in the movies.