After years and years of trying anything that came my way and seemed credible, the only thing that ever worked to change me into a morning person was living in an apartment that was so bright in the morning that even drawn blinds and an eye mask wasn't enough to keep the light from getting to your eyes. A few exhausted weeks after moving in, I was getting up with the sun naturally and feeling great about it. Since moving away, I haven't been able to replicate the effect in my new, dimmer apartment, no matter what I've tried.