^ Yeah, that's how it feels. You're tripping, it just doesn't have the same impact. You've been to the same place too recently.
But, technically, physical tolerance and "psychological" tolerance are one and the same. The psychological tolerance has to be mediated by some change in brain chemistry, as our psychological state is simply a result of a physical state of the brain, and chemical reactions in the brain ultimately produce everything we experience.
They're just two different neurological changes that occur after tripping, both of which diminish the impact of tripping again in the near future.