best way i found not to have a bad trip is getting pretty drunk before takin mushrooms or acid, the effect it has on your mind an body is such that although the hallucinations are the same it doesn`t have that emotional trauma where one minute u feel alright then next u feel all wrong "hot an cold" syndrome. but then if u worry about takin bad trips then the best defence really is DONT PARTAKE. I spent my entire teen years an most of my twenties trippin cause they grew in abundant supply where i come from an were readily available during the autumn months , that an the fact i loved hallucinating , as did most of my mates, but be wary of the humble mushroom not everyone has the capability to handle them an u wont know if that means u till your head disappears up your arse an u start talkin backward an shit, unable string to together sentences more any simple eh!!!!!!!!!!!