I just came across a blog about a mum and her little daughter, and this line really stood out for me:

She’s not a baby anymore. Will it ever sink in? I have to keep reminding myself that she can’t get her drivers license until 2025, so at least she will still need me for rides….right?
I reckon that's a good idea. If you think your little ones are growing up too quickly, remind yourself that they won't be able to [insert task only teens/adults can do] until [insert far-off date] and all will be well because it feels like a very long time away

For example, Cookie won't be able to get his/her learner's permit until about March, 2027

Please note: This won't work if you already have teenagers and it isn't a far off date - for example, my mum can't console herself that my youngest brother won't be able to get his learner's until July, 2011 because it doesn't seem that far away