At bed or sleep time, simply read the following to your child. You may choose to place some relaxing background music for children. Kids have wonderful imaginations and once they know they can relax by using their imagination they have an exceptional tool that can help them through any part of their life.
Children are easy to hypnotise as their brains already spend a lot of time in theta state, which is the state that your brain goes into when you are hypnotised. This is also why they learn easily in general, as this brain state is where the subconscious mind is at its optimal level for accepting new information.