One of the coolest things about the whole microdosing experiment is that after a while you just sort of... stop.
I wouldn't recommend doing microdosing as a way to fuel long running abuses of your body (either over-work, partying like an animal etc.). It works best if you're just trying to get the most out of your day.
There are articles about microdosing and how it's popular among a lot of programmers and stock market traders and from what I can see there isn't too much with respect to dangers.
Because I'm okay doing 1/16th three times a week - one tab will keep me good for a month.
With respect to my comment about how you just stop - what happens is that your good habits ALSO feel better and are easier to maintain, you then continue them and it becomes the habits themselves which form a positive feedback loop. I decided to take a break from microdosing and more or less felt the same for months afterward.
It was like the chemicals and pathways were already there in your brain but needed to be used in the right way to get things going - and microdosing was like a set of training wheels to help you on your way. After a while you don't need the training wheels any longer and things just feel better on their own.
And because of how acid is metabolized, there is absolutely zero trace of it in your system in less than a week. The positive feelings you have after are a product of your habits and your brain.