References – MN 56: With Upāli 
“Do thoughts by themselves have karmic consequences?” Answered by Ajahn Pasanno and Ajahn Karuṇadhammo. [Kamma] [Directed thought and evaluation] // [Perception] [Feeling] [Volition] [Self-identity view]
Sutta: MN 56: Upāli
Follow-up: “Is it good kamma to decide not to act on an unskillful thought?” [Skillful qualities]
Story: A person talks with Ajahn Liem, analyzing their consistently bad thoughts and obsessions. He replies, “If you see a pile of excrement, why would you want to stick your nose in it?” Told by Ajahn Karuṇadhammo. [Ajahn Liem] [Unskillful qualities] [Similes] [Fierce/direct teaching] [Culture/Thailand] [Thai Forest Tradition]
Comment: I think my problem is that my nose is already in there, and I don’t want to realize that I’m so stupid that it’s hard to get it out. [Delusion]
Two Kinds of Thought and the Removal of Distracting Thoughts [2017], Session 3, Excerpt 7
Readings by Ajahn Pasanno: [Stream entry]
The Island by Ajahn Pasanno and Ajahn Amaro, Chapter 16, pp. 293:
Sutta: SN 12.68.
Reading: AN 6.97: Benefits of stream entry.
The Island by Ajahn Pasanno and Ajahn Amaro, Chapter 17, pp. 294-296:
Suttas: DN 5.29-30; MN 56.18; SN 12.70.
Sutta: SN 12.70: Susīma.