It’s okay to feel frustrated. It’s not okay to be mean, rude, or disrespectful when you feel frustrated. Second, use the term when. “When you leave your clothes on the floor, I feel upset.” This is not an insult or an accusation. It’s in the same category as, “When I put on a sweater, I feel warm.” There’s nothing to debate, argue, or defend. It’s simply your experience of the situation.