Self-hypnosis is generally considered safe when practiced responsibly and with proper guidance. However, it’s important to approach self-hypnosis cautiously and be aware of potential risks. You should never attempt self-hypnosis while operating a motor vehicle since it can lead you to lose focus and cause a possible accident.
Since self-hypnosis can bring up intense emotions, working with a trained professional can be helpful. Additionally, if you have a history of mental health conditions, I recommend chatting with a medical professional to rule out any possible risks. Above all else, educating yourself on best practices for a pleasant experience is always helpful.