Hi LnKay, and welcome.
I've got 3 grown kids too. A puppy is pretty much like having a kid though! But how fun. Yeah, the puppy will produce some stress, but a lot of love and laughter too (which are stress relievers).
If you're looking for some like-minded folks who enjoy giving and getting support, encouragement, tips, and sharing a few laughs, take a peek at this thread ---> 7-Day Motivational Thread 06.17 thru 06.23----NO EXCUSES!
In there, people post things they'd personally like to accomplish during the week,then post updates as to their progress. No pressure, though. There's no competition, you share only what you want to share. A new thread starts every Monday.
Give it a quick read and if it's something you'd be interested in, join on in!
(invite wording borrowed from epixi)