I get your feeling . Constant giggly Self Hypnosis wouldnt be too compatible with usual everyday life -
Just like every other Aspect of being on powerful Psychedelic Drugs .
http://en.wikipedia.org/wiki/Speaking_in_tonguesQuote: Neuroscience
In 2006, the brains of a group of individuals were scanned while they were speaking in tongues. Activity in the language centers of the brain decreased, while activity in the emotional centers of the brain increased. There were no changes in any language areas, suggesting that glossolalia is not associated with usual language function.[10][11][12] Other brain wave studies have also found that brain activity alters in glossolalia.[13]
The Phenomenon is not seen as a Psychopathological One , should theoretically be nothing to be afraid of.
All Spiritual Practices even Meditation carry certain Risks of Getting into a longer lasting crisis - which in most cases finally leads to Spiritual or Psychological Progress.
Experiencing DMT is one of the More Powerful Spiritual Paths there is ,and it opens up a Multiverse of Phenomena to experience -
It's up to you to examine and integrate those Experiences - If you feel in a fragile State , trust yourself . These Experiences have the great Power to rewire and reorganize the Way you consciously perceive and deal with 'reality' - impermanently and permanently.
Let's see how we proceed .
Ask the Right Questions - at the Right Places

Had he more quickly realized just who they were,he would have shown them more respect.Had he tried harder to fathom their brilliant minds,he would have taken more of their teachings to heart.Had he more clearly understood the purpose of their being,
he would have more vigorously tried to assist them.They were truly honorable; he was sadly prejudiced.
They were exceedingly well informed; he was grossly ignorant.They were totally indefatigable; he so often, and so quickly,gave up. Still, for many years there was a strong inter-species alliance between the Eleven-Eleven of the Half-way Realm, their Seraphic Associates,and their flesh-and-blood friend, a common mortal. Much was accomplished, many profited, and, there’s only one regret...They could have achieved so much more...
All Hypnotizing Hypnotizes Hypnotizing