From "Getting to Know Your Self" by the author of "Bilvavi Miskan Evneh"
page 244
If you seek pleasure in something new and different, you are stuck in the mentality of a created being, which by nature is always moving and imbalanced. You cannot find true pleasure on that level. The Creator, though, is unchanging; He is timeless. To find His Presence and the deepest pleasure, you must rise above your level and find balance, which transcends all change.
You may be wondering, "Am I supposed to eat the same foods every day? Should I go to work exactly the same way each day? Must I learn the same songs and read the same books? That would be so annoying!".
But why is that annoying? Because you are used to extremes, and you don't recognize the joy in consistency which confers the absolute and true pleasure! The pursuit of extreme movements come from other nations, who do not have a deep connection with Hashem. But we can truly cleave to Him, by connecting to the state without extremes that does not need to change.
We see that learning balance is necessary in order to be able to find the deepest part of yourself. One who does not guide himself in this way is liable to enter the mode of extremism, never to depart from it.
This insight was the final push that I needed to join OA. The realization that the structure of OA is for my spiritual good opened the door for me.