Avoid commenting on the number of children someone has (or doesn’t have.) Its none of your business to ask why a couple doesn’t have kids or remark if they announce they’re pregnant with their 7th (other than to say “Congratulations.”)
If you’re going to be wrong about someone, let it be because you believed the best of them. (Give people the benefit of the doubt.) put it this way— I’d rather be wrong about my husband being a moral person who would never cheat, then come to find out he had done, than I would like to be wrong about him being a horrible person only to find out later he was faithful all along.
Grandpa didn’t drink coffee, but when he was in Korea he used to drink it just so he could hold the cup and keep his hands warm. (During the Korean War be enlisted in the Marines with a bunch of his buddies right after high school.)
You can’t grow in faith (or character or friendships) without learning to be humble. To forgive. To listen without agenda. To allow for the possibility you may be in the wrong.
Ask for help. God will give it.
Depression can look a lot like a bad attitude. Try reacting to his chronic edginess with “Sounds like you’re in pain. You can come to me about anything, any time.”
When you bring home a new baby, make sure your older kid(s) hear you talking to it the way you talk to them: “I’m sorry Baby I can’t hold you right now, I’m going to play with Sibling.” It makes it a lot easier to tell Siblings that you can’t give them attention right now because Baby needs you. Less resentment, etc.
I heard a song today, “I love you to the bone” by Sammy Copley. It’s a beautiful story of a lifelong love. It’s my prayer for you that your spouse will have that song played at your funeral after you shared a 75 year- long happy marriage. It’s my prayer that your life is filled with love and laughter, and most importantly a partner who grows with you in all good things. And that you love each other to the bone.
Have them sort change, and eventually to count it. It teaches them to gather things that are alike, it's an introduction to money and it occupies them for 15 minutes! Just make sure they're old enough to be past the point of putting coins in their mouth.