thats just dopamine with extra steps  its great youve found a system that works and that youre sharing it however you really need to understand what serotonin is how it works and how it relates to adhd nothing that you describe in this post relates to serotonin feeling productive or arranging your living space to feel productive is a dopaminergic mechanism  again though these kinds of practical tips are exactly what so many of us need so thank you for your post and im glad that youve managed to find a system that works for you