a contented mind is a continual feast

Late 19th century hand-knit mittens. The verse on them reads:

One thing you must not borrow nor never give away,
For he who borrows trouble will have it every day.
But if you have a plenty and more then you can bear,
It will not lighten yours if others have a share.
You must learn to be contented then will your trouble cease
And then you may be certain that you will live in peace
For a contented mind is a continual feast.

My mom sent me the link to these today - she's collecting ideas for poetry mittens. These are in the Smithsonian. The verse feels fit to the season, with Thanksgiving coming up.