Tell me a time where you had a client that was upset, but during a session your client went a full 180? (good way)

Sometimes clients just want to vent or have a trusted person listen to them. I don’t find this offensive…actually, I take it as a compliment that they trust me enough to tell me what has them upset.
I listen to them and tell them: “lets take out some of those frustrations on the weights”.
I push them a little harder than normal in their routine..wear them out…keep them moving with extra reps. I tell them: “one more”, “you got another one in there”, “come on…get pissed at it…move it”.
I keep their heart rate up with super sets or giant sets and cross training…it gives them less of an opportunity to actually hold a conversation.
I follow up with them post workout to give me feedback how their session went.
9 times out of 10 the response I get is: “that was a great workout”, “you really kicked my butt!”, and “I feel great!”.