There's no good evidence that many of these supplements make it past the blood brain barrier (besides caffeine obviously). Even if you could just eat GABA, there's no reason to think it would make you calmer, since there are cells in every part of the brain that use GABA. It's like saying you can make your computer better by adding more electricity. A good scientist would not believe results with an N of 1, especially when the subject is also the experimenter and very much wants positive evidence for their hypothesis. The context from other commenters makes me even more doubtful. You might have the best of intentions but it seems like your supplements have inhibited the skeptical regions of your cortex, including the self doubt area of the inferior parietal sulcus (look it up)