This is quite strange indeed. My therapist told me something very similar. She thinks I'm not clinically depressed since people who are actually in that situation find it difficult even to get out of bed and lead a "regular" life. Well, I'm not unable to speak, walk or eat, but I'm very, very lazy, I often feel tired, I see myself as a failure and am prone to bouts of horrible desperation. I can keep the facade together for others to see me as completely "normal" but it's a living hell inside my head.