From Derech Eretz (#406) http://www.simchashachaim.com/audio/individual-lectures/406-derech-eretz/
Q&A: Episode 2
From Midos, the Supreme Test (#053) http://www.simchashachaim.com/midos/53-midos-the-supreme-test/
Q&A: Episode 1
From Happiness (#079) http://www.simchashachaim.com/audio/individual-lectures/happiness/79-happiness/