Okay, the user wants me to translate "self-restraint" into German. Let me think about the correct term here. "Self-restraint" can be translated as "Selbstbeherrschung" in German. That's the most common translation. I should check if there's any context that might change the translation, but since the user didn't provide any additional context, "Selbstbeherrschung" should be accurate. Also, the user mentioned that if the content is already in German, leave it as is. Since the original word is in English, I need to translate it. No explanations, just the translation. So the answer is "Selbstbeherrschung".