When in the middle of my depression of 18 months I started to day sleep. I also thought about a night job. I went to apply for a night job and the employer talked me into taking a fast paced day job with constant social interaction. It was a real shock to my system. Now I like it even though it is still kind of a shock. It is half past midnight where I am and even though I have tomorrow off from work I am ready to go to sleep. I now believe my night owl habit over the years was a kind of avoidant behavior. I am happy I was talked out of a night job. I am still not fully out of the depression but my schedule has completely switched to sleeping at night.