Recently, I’ve been seeing a lot of people say things like “I reigned in my feelings.” Unfortunately, this really makes no sense.
A king reigns upon a throne. You do not reign in your feelings.
The word people are looking for is “rein.”
When riding a horse or a horse-drawn carriage, the reins control the horse.
When you rein in a horse, you are either bringing the horse to a stop or getting them back under control.
So, you can rein in your feelings all you want. But you can’t reign them in.