Does kava affect the mind? In the best possible way!!!!!!!!
[Insert obligatory "at the risk of sounding weird" disclaimer here] I have been doing CBT and DBT and practicing mindfulness and mindful meditation for years now. I do not and have never suffered from any mental disorders for which these were needed as therapy, rather, I'm a great believer in "mental hygiene" despite that old Mental Hygiene Movement's (c 1910 - 1960) - bad rep from the last century, I just don't know a better term than mental hygiene, maybe "mental preventative maintenance?"
Anyway, one of the great things you learn from the stuff I've been doing is recognizing who you are. There is a "person" in your head who does a running sort of stream of consciousness, blabbering away all the time. I call him "the idiot in your head who won't shut up." Because if you ever hear him he is using your voice, and he lives in your head, it's easy to mistakenly believe he is you, that his impressions and thoughts and opinions are yours, but it isn't true. He is a product of your mind, of course, but he is not your mind, any more than your dreams are your actual experiences. Rather, they are inventions of your mind amusing itself, at play, like a couple of puppies or bear cubs wrestling. They aren't really fighting, just at play, practicing, trying things out, letting off steam, gamboling. That is what your dreams are and that is what that guy in your head is. In mindful meditation you can sometimes just sit back and observe him, and at other times you can recognize his intrusions and politely show him the door for a while. But IAE, you recognize he is this imitation of a consciousness, an artefact of your own mind's productivity.
All that being said, it is still easy to fall back into the lifelong age-old pattern of thinking he is you, and having trouble getting past him to you, unless considerable effort and consciousness is expended.
Here's where kava kicks in, for me. Kava helps to strip him away of some of his power to make you think he is you. In large part it achieves this by getting that little idiot to shut up for a while, and just let you be you without having to constantly be a bouncer at the front door of the hopping exclusive night club that is your mind.
Kava doesn't change you, it more like makes it easier to be you.
It also makes me see lovely colours and feel waves of pleasure wash over me and have awesome dreams. And go to bed at a decent hour, get a full night's sleep, wake up at a decent hour, be productive at work and good company to those I like and love. It gives me me as a present, and kisses me on the forehead. It also soothes my aches and pains and comforts me in other ways and I'm about to find out if it will cure athlete's foot any better than apple cider vinegar.
Of course, one doesn't have to engage in any of this spiritual mumbo-jumbo to enjoy kava. One could simply party on it, in a mellow way and never think twice upon't.