Many of us have "babied" our children for way too long. I know I did. Since we had just two children, and I had a housekeeper and we had a good two-person income, our two sons had basically everything they needed and wanting, including video games, clothes, cars provided (they had to pay for the gas), nice clothes, sports, classes, lessons, you name it. They both started part-time jobs when they were 16 and had to pay for gas and spending money. It was a pretty darn good life.
They were supposed to clean their rooms, but it was always a battle. I finally quit washing their clothes and they started doing that. I rarely could get their dishes and glasses from their rooms into the dishwasher, unless I did it.
I should have been more consistent, much tougher, and somehow found the energy to keep on pushing and pushing to have them assume more responsibility sooner and more consistently.
But I was tired. I had a full time business to run, volunteer work, my husband (their dad) was a high functioning executive alcoholic who worked all the time, and I honestly didn't have the energy I needed to have to enforce what I needed to enforce.
They smell fatigue and weakness, even the best kids, and they capitalize on it.
I do believe that attaching natural consequences to bad behavior is the right way to go. Every therapist I have ever consulted has advised this. Like inadaze and susiestar said----no work, no pay, no privileges. Natural consequences.
Many of our kids are just immature and lazy. Others have more serious problems. Most all of them will try this and see if it works. If it does, they'll push it even more.
If you can, start now, calmly, simply, setting a few guidelines. Don't write a book because you can't keep up with it and enforce it. Have a few rules and consequences, and stick to it like glue. No excuses. Cause and effect.
I wish I had done more of this, but I guess I did the best I could at the time. Most of us do, and it's okay that it's not perfect.
Hang in there. We're here for you.