Need help improving my skin (face) after baby?

I'm only 25, but I honestly feel like my face aged about 10 years since I have a 2 year old, I don't get much sleep at all, and I'm constantly stressed out. No one else seems to agree (except a few honest people) but you can practically tell I'm not getting enough rest at night. And now my face is starting to have little breakouts here and there (this is new). I dont have a greasy diet, but possibly a moderate sugar diet - could that be the problem? I currently use Aveeno Clear complexion soap (night and day) and Eucerin cream on my face as a moisturizer. To me, the skin tone of my face looks a little uneven and dull. Not radiant and youthful like it used to be, but I also had less stress in my life then. I know they say that your body is a mirror of whats going on inside - so I know this is an internal problem... So what can i do about this? Like what products should I try using or what should I try eating more of? Do you think yoga could help?