Self-Tracking
scienceblogs.com
scienceblogs.com
My personal approach is to try to raise the bar past what a placebo can give me. Which is tough, because placebos can be pretty robust! It probably means I'm going to miss out on smaller-but-still-real improvements, but at least I have a chance to score the bigger ones. I don't know what else to do. Blinding yourself on which wine you are drinking is sort of possible, but a lot of interesting self-improvements can't be blinded even in principle; are you going to blind yourself to whether or not you're exercising?
I'm often more interested in cognitive improvements, but it's really hard to come up with a cognitive measure that is objective and doesn't naturally rise over time as I practice it daily. Waiting for those things to stabilize can be a problem too; it can be months or even years.