The only way to convince someone to do anything is to set a good example. Monkey see, monkey do. Start sharing your financial plan with your kids. Quotes like, “I sure wish I would have started when I was your age,“ set the stage.
Ask your millennial questions like:
“Have you started investing?”
“What can I help you with?”
“What are your savings goals?”
“How about I help you open the account and give you a 50% matching contribution for the first two years.”
Actions always speak louder than words. The sooner you have the conversation the more money you will both have.
P.S. This chat is easier than the birds and the bees.