将以下段落翻译成英文：
假如你今天病了，去看了医生，医生给你开了药，你必须服用，无论你信不信，可是要告诉你一个真相，如果你心里总想着，我这个药肯定是没用的，也许会让我更难受，那么这种情绪可能会影响你的康复。换句话说，药物治疗并不仅仅是物理方面的治疗，心理、认知因素也起到了很大的作用。
If you get sick today and see a doctor who prescribes you medication, you must take it regardless of whether you believe in it or not. However, let me tell you the truth: if you keep thinking that this medicine is definitely useless and may make you feel worse, this emotion may affect your recovery. In other words, drug treatment is not just physical treatment, but psychological and cognitive factors also play a significant role.