帮我写篇英语短文：假如我是一名医生,在面对一个重病患者时的复杂心情,

Once there was a dying patient in front of me.I was sure that he needed to be operated on.However,I believed that if I operated on him,he might be killed.I was so nervous when I claimed that he needed operation,for there hadn't been any patient who died after my operation.I thought I couldn't face the sad relatives of a dead patient.Of course,I didn't want to lose the credits I had earned.No matter how unwilling I am,since I am a doctor,it is my duty to cure the dying patient.