Cataract surgery went well.

[elleng]

17. I think there's something like that in the Bible,

but as I've never been a student of it, I may be wrong.

Something about praying in the closet?

OK, MATTHEW said it, Matthew 6:6.

New International Version
But when you pray, go into your room, close the door and pray to your Father, who is unseen. Then your Father, who sees what is done in secret, will reward you.

New Living Translation
But when you pray, go away by yourself, shut the door behind you, and pray to your Father in private. Then your Father, who sees everything, will reward you.

English Standard Version
But when you pray, go into your room and shut the door and pray to your Father who is in secret. And your Father who sees in secret will reward you.

http://biblehub.com/matthew/6-6.htm