Grandpa was a Marine, though you’d never know it. Slight in build and oh-so gentle natured. But underneath he had a good bit of grit. He never complained. He once told me “You can stand any amount of pain for a little while.” (Basically saying suck it up and hang in there until help arrives.) I’ve never forgotten it.
Toddlers fall... a lot. Most falls are harmless but sometimes bad accidents happen. Head injuries are scary because they bleed and swell. If bleeding doesn't stop within a few minutes or you can see it's a big gash, head to the urgent care. And remember if the swelling goes out (“goose egg”) that’s a good thing: Better out than in.
You don’t have to be friends with people you don’t like. But you can’t decide you don’t like someone unless you get to know them. (Rather than a look or a reputation or a difference, etc.)
“When it comes to consequences, don’t speak what you won’t serve.” Meaning don’t threaten any punishment you’re not willing to enforce. This is helpful in terms of teaching the child a lesson and also an important lesson in not shooting yourself in the foot. (I took away your tv one day you were home on a snow day. Bad idea. That punishment was against my own interest! I got no work done.
Never follow an “I love you” with a “but...” Instead, follow it with “and...” or “that’s why...” Remember this when they’re young, teach it to them when they’re older.