As a new father at 27 and a new father at 54, I can suggest to you first-hand to slow down and take it all in and enjoy it. When I was 27, I was so focused on the world out there and everything in it that I did not stop and smell the coffee as it were. Now, things have slowed down and I can relax a little bit (a lot!) more and enjoy and appreciate the little things. I missed out on some things when I was younger, won't make the same mistake now.
Congrats and good luck!