Meaning that it can become mentally addicting in the sense that you crave the feeling it gives and then start chasing it with larger doses. When you stop taking it, there is a withdrawal period where you feel down, lack emotion, brain fog, and moodiness. From a physical standpoint, you can feel run down with little energy, sweaty, and sore.
That being said, even if you are taking a lot on a daily basis and just quit, these symptoms will generally go away in 3-7 days, so it is short lived. As long as it is taken periodically or in small doses with switching between strains, this likely won't happen.
I know for me it certainly has helped.