Ch-ch-ch-changes

I have reached a very difficult stage with my son. He is now physically bigger than I am, and has begun to push past me when I'm talking to him, or getting after him. I don't know how to handle it. He's in the throes of puberty, and his usual sweet, calm demeanor is definitely changing. I feel very alone, and very anxious. 

I started running in earnest today, to prep for my next 5k. It felt really good to get outside and break a sweat. Time to put myself back toward the top of the priority list. How can I be the best version of myself, and the best mom I can be, if I don't?