This thread has made me smile.
To be honest OP, I don't think acid is 'the one' for treating mental issues. (In fact if that's a motivating factor, that's a red flag imo..) Boosting creativity on the other hand!! Acid is a strange one and definitely stays with you, to an extent.. I have one loose acquaintance who did it quite often and he's never fully come down, sees trails and stuff.
I've only done it a handful of times personally and doubt I will again: The first time (and only time I did it without other stuff actually) was a half-dose blotter and it didn't do that much aside from make me feel a bit drunk/stoned/weird. The other times I've done it has been in a festival or free-party ("rave") environment and it's always been a mind-bending experience. Fun though
I'm not discounting the therapeutic value of some psychedelic experiences (and I would include in that MDMA/Ket/2Cs etc.) I would say I've honestly had some pretty real and helpful insights. Gimpsmack is right though, it's only so 'profound' and I've encountered the 'omg' stereotype he's talking about sadly, lol..
I reckon drugs in moderation are fine for the majority of people, but they do take something out of you. Too much of a good thing and that. For example, do too much acid and you risk turning into a hippy, do too much coke and you risk turning into an amoral degenerative rat fiend cunt and so on.
My advice:
- Don't do it if you're second guessing yourself or unsure. (Since you've ordered it in advance this probably doesn't apply.)
- Go with the flow. Don't overanalyse or try to rationalise the experience.
- Do it with some chilled, close friends.
- Do it in a nice, but not overstimulating, environment.
Oh, and have fun

Do bare in mind it lasts quite a long time, maybe 8-10ish hours?
[ame="http://www.youtube.com/watch?v=zBrsw3-llCc"]The Beat Pirate - Are You On 1 Matey? (Acid Mix) - YouTube[/ame]
Fatbat, I'm not toking at the moment, but 10/10 would blaze.
Joe, I did 2CB once.. I saw the music. Very strange! RE the shrooms - it's prime picking season right now. I keep meaning to go for a countryside walk as I've not done them for years (since you could buy them legally in Camden) and something about foraging for a psychedelic experience seems pretty appealing..
Question: Have any of you ever tried DMT??