You can never hug your children too much. Ever.
Never mock the person that treats their animal like family. For some of us, our pets really are family. I would be just as devastated if I lost my dog as if I lost a blood relative.
That you can never talk to your children too much. Treat them with respect. It is how they learn, by example. I even tell them yes ma'am and yes sir. There are a lot of children that never hear the words. It might be the only time they hear them.
You are an adult. Act like it. That often means not stooping to other people's level. And, sometimes, that means not trying to show people up.
When you are an adult, you learn to let by gones be by gones. When your spouse has friends that are friends with someone that you had a falling out with a long time ago, grow up. Get over it and move the heck on. You are hurting your spouse. Especially if the ax you are still grinding is from before you were a couple.
That everyone grieves differently. And, that is OK. There is not a "right" way to grieve.
Don't be afraid to make new friends.
Well, I am going to wrap this up for now. I have a sinus headache that is eating me alive.