Amnesia: Forgetting thoughts and memories with NLP & CBT
Most people endeavour to get more control of their lives. The main thing that helps people feel in control is is that they can consciously exert their will on their bodies and their surroundings eg you made the decision to access this page. One of the first things NLPers learn is that they can decide to change what they are feeling in the same way.
Yet there are some processes we can have trouble doing in the same way, sleeping and forgetting in particular.
Because sleep initially involves the lowest possible conscious activity, rather than concentrating on sleep, focus on relaxing as much as possible and slowing down your mind.
Forgetting also requires that whatever you're forgetting never again comes to your conscious attention. But just because you've forgotten something consciously, that doesn't mean your unconscious mind isn't responding to it in some way. So make sure you give it a well-formed direction to go in first.
The best way I've found for forgetting something is simply making it difficult to remember.
Set up a sliding anchor for feeling that something is difficult (something you find difficult to remember is better), and try to remember something you've been trying to forget whilst increasing the difficulty feeling. They will become attached and sooner or later every time it would have come into your head, you'll get the difficult to remember sensation instead.
Eventually you'll give up and it will be forgotten.