I practice hypnotherapy with NLP (neuro-linguistic programming). Neuro-linguistic offers a trauma reversal protocol that is rapid and effective. With that being said, it is advisable to do additional follow up work. Another NLP strategy is called a resource state. Here we 'anchor' a resource state and transform your past experiences on your timeline. This is all done in hypnosis and is also very effective. NLP practitioners are also hypnotherapists as most NLP strategies work with hypnosis. I suggest you look for someone who is a master NLP practitioner.
I also use a regression protocol with hypnosis that will take a client back to the original cause of the emotion or limiting belief associated with the trauma and allows processing of the significant event. This protocol also includes the timeline exercise at the end.