From a satsang by Gautam Baiji ~
By the grace of God, we are able to get satsang in our lives.
Sometimes we might think, "Why is it necessary?"
Especially if we have knowledge, why do we need satsang again and again?
One devotee asked this very question of his guru.
The guru said, "I will answer in a moment, but first, would you clean my pot please?" The guru handed him the aluminum pot he drinks from.
"Guru, you give me this pot to clean every day, and it's never that dirty. Why is it necessary to clean it every day? Why not wait until it's very dirty?"
The guru said, "The pot's made of aluminum. If you don't clean it regularly, you will see stains everywhere. It will look so dirty, you have to use lemon and salt and a lot of effort to clean it.

"It's the same with satsang. We live in this world and know that mind has the tendency to collect negativity quickly. But regular satsang will keep it positive."