It's time that I try to whip my 18 year old into shape. They're long overdue for this.
Do they really have the kind of problems that require you to whip them into shape? Do you think it's a good idea to put so much pressure on your child?
Yes, if I don't do it who will?
It is good to want to help out your kid but you can't force your kid to be ready. If they want help, that would be great but you should be prepared if they don't as well.
Oh I'm prepared but I need to try this
I'm glad you're mentally ready for the possibility of them resisting. I hope they're ready to learn the lesson you're trying to teach.