These are all thoughts I've had that don't really feel worthy of a full blog post so I'll mash them together here.
Being a parent makes you more sensitive to all the tragic crap that goes on in the world. National disasters, sad news about the loss of a child, what it would be like for a child to lose a parent and overall how precious life is. I'm more sensitive to the news and I try to be more aware of other parents, women with strollers, and ways I can be more helpful to new moms. It changes the way you see the world.
Having a child means your world is inundated with toys. Bouncy seats, exerscausers, swings, boppys, bumbos, playmats, blocks, stuffed animals, books, etc. Prepare to trip on all of it and get used to having bruises resulting from stumbling.
And speaking of bruising, keep an ice pack handy in the freezer for when you happen to bump your head putting the car seat in and out of the car. Or for when the door hits you in the elbow as you try to shimmy through it while wrangling the car seat and the diaper bag and the stroller through at the same time.
Do your best to get your rest. It's tough with kids but take naps when you can and go to bed early every once in awhile just to replenish yourself.
Moral of the story: Try to stay positive, watch where you are going, and get your sleep so your in the best shape for keeping up with your kid.