In Episode 147, Billy Donnelly discusses his unhelpful habit of traveling down the rabbit hole of negative thoughts. He talks about his acceptance of a reality where nothing goes right and everything is bound to go awry, leading to disappointment, heartbreak, and hurt. While not one to wholeheartedly catastrophize situations, it is very difficult for him to find any degree of hope or optimism as he plays out scenarios in his head, both large and small. However, with his therapist's guidance, he is putting in the work to challenge his negative thoughts and push back against falling down the rabbit hole, describing what some of that process has been like for him. He talks about creating new habits to replace the old ones that help break the cycle of resorting to negative thoughts each time, and how it has helped him in dealing with some of his fears, concerns, and anxieties.