Hypnotherapy can be one of the most relaxing things you can experience with a trained hypnotherapist or you can also learn self hypnosis. Both are quite similar to meditation but with the addition of a clear positive intention. One of the perks of my job is that I get to experience a deep sense of relaxation several times a day. You can learn some excellent techniques to allow yourself to relax appropriately to the context you are in.
Learning to relax can be very helpful if you have suffered sleep disturbance or insomnia.
You should NEVER use hypnosis downloads while driving or operation heavy machinery. It is wise to find a safe and comfortable place to sit down or lie down where you will not be disturbed. Switch your phone to silent and ensure you will not be disturbed.