I haven't tried the drug but the effect it initially had sound unbelievably good. I had a similar effect after a stutter therapy (didn't work out in the end). There is apparently an effect, when stutterers come together and work on there speech (don't nail me on the details) you may become fluent for a short period of time. It's called "lucky fluency" And it felt exactly like you described it: being on top of the world and extreme boost in confidence. And also really sobering to get back to normal and really realizing what you're missing. Curious about experiences with this substance tho.