Unless there’s a price, as you say:  If the package includes intolerance, contempt, looking down on the poor benighted heathen around you as unworthy of consideration - in short, being a jackass by entitlement - the personal improvement might be a mixed blessing.  A good chunk of “born again” or “saved” Christians are tarred by this; think of Pat Robertson’s more notable statements.

But just as a sleepwalker can do things that his wakeful mind would prevent, so perhaps some forms of lunacy would have to be considered beneficial - even preferable!

An interesting topic.  Thank you.