Empirical confirmation

I've been taking a supplement called 5-HTP to help alleviate depression. My mood picked up a few days after I began taking it, and for the most part stayed up over the next month. Then, about three or four days ago, I ran out. I ordered some from an online store to save money, and reasoned that the interruption in routine as I waited for it to arrive would be another test of its effectiveness. Sure enough, within a day or two my mood dropped, and I began to feel the familiar nauseating tug of negativity just beneath the surface of every moment. I haven't written much. It's been hard to find motivation to post here, to keep my place straightened up, to watch a movie - really, to do anything. Even eating seems a bit more lifeless than usual.

So I guess that's enough evidence for me that the stuff works. It may not work for everyone, and some of it could even be a placebo effect, but whatever the case, I'm going to continue to take it. During that month I was outside getting fresh air and exercise much more often; I took an interest in birds and photography and travel; when the night rolled around I didn't wonder whether sleep would come quickly, and, if not, what I would do to occupy my mind until it did. Things were just a little more pleasant and less worrisome all the way around.