every day for a month is quite the shroom bender, my friend. Do you mind if I ask how much you were taking daily?
Also, how long ago was this?
As far as I'm concerned, taking mushrooms, or any drug everyday for a month doesn't make you a POS. Negative self-talk is extremely limiting as well, and for most, turning negative self-talk into positive self-talk is big part of recovery. By telling yourself you are worthless, you eventually start to believe it to some degree at least, and it starts to feed into itself.
What you did may not have been exactly "smart", but you are at the very least intelligent enough to recognize your mistake.
You won't be like this forever, your body can change and heal. The current state you are in is probably more of an adaptation/reaction to the daily dose of psilocybin rather than permanent damage. In your body's attempt to stay "level", the brain and body has made some adjustments. For me, the hardest part of recovery is being patient and trusting in the process on days when I don't feel good, or maybe even feel worse than usual. It's easy to lose focus on the bigger picture when the moment is intensely distracting or discomforting.
I've seen my best friend and myself come out of psychosis and probably undiagnosed schizophrenia. On the positive side, if it was drug induced, then you have a much higher probability of symptoms resolving completely than if it were genetic onset.