IMO.....just take it one day at a time and do the best you can. Look for balance, don't get fired up on the small stuff, there is way too much of that to put you off coarse. I have a son 13 and daughter 10, it's work in process, but it's worth putting the time in.
You're going to be surprised how much smiling all the time can hurt your face. You won't believe how slippery the road is or how fast everyone is driving when your child is in the car with you. Hang on, you are in for the most exhilerating ride of your life. At times it will be tough on you, when your baby moves out, you will cry. Treat them just like people. You'll do fine