Please reach out to me at mdhypnosolutions@gmail.com if you cannot find an answer to your question.
Yes, if you are willing to be hypnotised. All hypnosis is effectively self-hypnosis.
Yes, you will never be out of your own control, you can simply open your eyes at any time.
No, you cannot get stuck in hypnosis, you would simply open your eyes and wake up or fall into a natural sleep, waking when ready.
Hypnotherapy can help with anything from confidence building/performance enhancing, bad habits (such as nail biting), fears and phobias etc. Anything that may be limiting your abilty to enjoy life can potentially be helped with hypnotherapy.
*Pain and discomfort can be reduced through hypnotherapy but requires permission of a doctor or specialist prior to any therapy being started.