Good morning . How are you ?   I'm very worried , doctor   Oh ? What are you worried about ?   I'm afraid that I'm very ill .   I'm sorry to hear that . Why do you think so ?   Because I feel tired all the time , even when I wake up in the morning . I find very difficult to do any work . I have no appetite . My wife cooks me delicious meals but I can only eat a little .   How do you sleep ?   Very badly , doctor .   Do you find it difficult to get to sleep , or do you wake up early ?   Both , doctor . I never get to sleep until two o'clock and I always wake up at five .   Are you worried about anything ?   Well , yes , I am . I'm worried about my work . I've just taken a new job . I earn a lot of money but it's difficult work . I'm always afraid of making a mistake .   I see . please take off your shirt and lie down on the couch .   Yes , doctor . ( The doctor examines the patient ) 