1. Lead by example - kids love to be involved, and they hate being ignored. So if you are doing something exciting such as wrapping presents, get them involved too. Don't assume that the kids are too young to take responsibility. Give them a task related to a project you are working on. If you are planning a family vacation, then as part of the family it is important for them to be involved in the process. You might be surprised at the suggestions you get. So - let them find books in the library on the place you are visiting, get them on the Internet and help to organise the itinerary. Kids learn so much from us as adults. If they see that goal setting and achieving those goals are capable and they helped to make that happen, they will be able to translate those practical skills into their school years and into adult hood. If you are impatient with them, guess what - they'll translate goal setting as something to be avoided at all costs - like going to the dentist. So lead by example. If you are always on the go but don't give your kids the time of day, and then wonder why they are playing up, then it is time to see if they can help you achieve some of those tasks and goals. 

2. Do not deal in double standards (see point 1) - kids have a nasty habit of seeing right through you and them. If you want your children to be  fit, healthy, read books, eat healthy, nutritious foods, not smoke,  swear or drink to excess then you need to lead by example.

If you still don't believe me, then you may also be interested in a recent research report that stated that 80% of children accepted into a study on obesity had an overweight parent...usually the mother. Parents lead by example - http://www.motivateme.info/news-and-views/2006/12/7/parents-lead-by-example.html