I successfully hacked my sleep schedule around 5 years ago. I used to think I was a night owl basically working till 3 in the morning and waking up at noon, the

I successfully hacked my sleep schedule around 5 years ago. I used to think I was a night owl basically working till 3 in the morning and waking up at noon, then, I realized I was basically not being productive enough doing that. I used a combination of two things: 1. Sleep exactly 7 hours a night at the exact same time (+/- delta) and wake up at the same time. 2. Use the same awful alarm that wakes me up. The alarm doesn't sound alarming, its just that when I hear it, I have to wake up because it is tied with so many memories of waking up in the morning for exams. In fact after switching to an iPhone which doesn't have the same alarm, I have found it (slightly) difficult to wake up.