In Miriam Toews' book "All My Puny Sorrows," the quote "Remember what mom used to say? Shred the guilt." emphasizes the importance of letting go of feelings of guilt and self-blame. It suggests that sometimes we carry unnecessary emotional burdens and need to release them to find peace and clarity in our lives.

This message encourages readers to forgive themselves and stop holding onto past mistakes or regrets. By recalling this advice from their mother, the quote advocates for self-compassion and moving forward with a lighter heart, which aligns with the novel's themes of personal struggles and emotional resilience.