Lots of good advice above.
I had twins, and was naturally more of a puppy person
so at times I was a little overwhelmed, and memories are a bit of a blur. But now that they're grown, looking back I can see some of the things that we did right.
We helped our kids develop a love of animals. It's a nice gift. Pets are nice to have as they are comical, calming, and love unconditionally. Even if you don't or can't have a pet yourselves, you can still help your child develop a love of animals. (There is some evidence, too, that being around them can help prevent allergies.
https://www.webmd.com/allergies/news/20110613/pets-may-reduce-childrens-allergy-risk )
It's great if you have a close family, but even if you don't, or don't have family nearby, you can foster friendships. Having a solid group of friends during the school ages helps a lot with kids' self esteem. We took it a step further and developed a solid group of friends - adults and kids - when our kids were in kindergarten and it took them and us through high school and beyond.
Help your kids to develop a passion about something, or at least some likes. Sports, music, crafts, volunteering, 4H, bowling, scouting, something. It is nice to be a part of something, and friendships are fostered through shared activities.
It's nice to have family time and traditions that are all your own. Disney is a big one for many of us here, right? We have lots of other ones, too, and kids really come to appreciate them as they grow up.
A lot of people told me not to wish time away, and they were right. Because we always say, "I can't wait for such and such, or until the baby's old enough to blah, blah, blah". I agree with others who've said to just enjoy every minute because each day is precious, and time goes by very fast.
Congratulations, and enjoy your baby boy!