Reasonable Discipline as a parent done to a child for why they did with physical methods like a slap on the bottom, a flick behind the head, the kid will be hurt, but the wound will heal and go around like it did not happen, because kids are very forgiving. But tell a kid your disappointed is like stabbing them in the inside, and they won’t know how to handle it because it’s not the body that’s hurt, but the spirit. And every time a parent just tells them every time they mess up, ‘i’m Disappointed with them, it adds up because a kid will always remember what their parents said, based off the fact that a kid is always open towards they love with them-selves, and to be told that they have failed them sends in a spark and develops within them like a tumor because they don't know they are forgiven for it, just that they are left with failure from the the ones they look up to, and are very quiet about it because they don't know how to forgive themselves. A parent should never leave their kid with that thought, because the kid fears that when they will mess up, the parents will get even more disappointed, and it will cause even more dishonor, and left with the thought of being a disappointment to the family is a slow bleeding death, if not forgiven for it. and the parents won't know till they get older, and it will be hard to be relieved from a constant pain and wreaked up spirit with words for years.
that's what my mum fairly told me.