I'm 4 months in with my first kid. Here's what I think matters. 1. Organization is key. We meal plan for the week every Sunday afternoon. We both installed ToD

I'm 4 months in with my first kid. Here's what I think matters. 1. Organization is key. We meal plan for the week every Sunday afternoon. We both installed ToDoIst on our phones and have a specific list of tasks for every day of the week. We track our daughter's data using Huckleberry (great app) and it's helped us make sure her naps and feeding are on schedule. 2. Weekly retrospectives for the family make a difference. Both of you will have things that didn't go well. That stress you out. That aren't working. You need to have a safe time to raise them and work together to solve the problem. For us, that's usually adding a new weekly task to one or both of our ToDoIst lists. 3. Your relationship will suffer. You're both stressed out and lacking sleep. Forgive each other. Swallow your pride. 4. Read the AAP book on young children. Its 800 pages but the first few chapters are what matters. The rest is mostly a reference. (American Academy Of Pediatrics - Caring for Your Baby and Young Child) Good luck. Its a journey.