Do you have instances/events that hit you in the heart? The other day my sister came up to visit for my birthday, and to see our new house (new to us, in reality 42 years old).
She brought my niece (8), and my nephew (5) with her. I was in the kitchen, and my husband opened the front door, and my nephew came flying through the house at top speed, running into the kitchen to give me a huge birthday hug. As I squatted down to hug him, tears sprang to my eyes, and I was overwhelmed with emotion. It was such an interesting event.
Even now, a week and a half later, I'm still emotional about it. I told DH that I nearly cried when Huey hugged me, and he agree that it was very emotional, and we didn't really know why. So I'm just throwing out there the door for others to share their emotional instances.