Your brain can’t handle the high levels of THC. This is why you get an unpleasant experience. Smoking releases all of the THC which can be as high as 20%, getting a smaller dose would be easier with something like a Magic Flight Launch Box, it’s powered by a battery and will let you dose up smaller amounts (without the smoke too). When you do it make sure you are in a comfortable setting with attention paid to stimulating vivid colors. Do not play loud music. The THC is an amplifier, and over time enough of it can increase your brain’s plasticity. This can be a good thing if you have to open some memory ‘boxes’ to deal with past stuff because you can help yourself rewire and retire old copes. Good luck. Also kot ID.