That's certainly entirely possible. Everyone's neurochemistry is different. I'm not sure that "a few days" is enough to truly assess the situation, but it's a good start. Perhaps a slightly different dosing regimen may still benefit such a person. As well, it's entirely possible that abstinence is best for that person. No way to know that going in, though.
And yes, I do. I also believe that approximate threshold doses (enough to feel a mild "elevated" state, but not to the level of warping one's perception of reality) have benefit as well. The big trips do too, but a threshold dose or less can allow one to still be able to function in a normal way, just with an increased sharpness of mind and an ability to focus easier.
I'm speaking from personal experience here, of course. The thing about psychedelics is that YMMV, which is why being mindful of what we do know about psychedelics is so important.
And yes, I do. I also believe that approximate threshold doses (enough to feel a mild "elevated" state, but not to the level of warping one's perception of reality) have benefit as well. The big trips do too, but a threshold dose or less can allow one to still be able to function in a normal way, just with an increased sharpness of mind and an ability to focus easier.
I'm speaking from personal experience here, of course. The thing about psychedelics is that YMMV, which is why being mindful of what we do know about psychedelics is so important.