Thanks for reaching out for help. Memories haunting a person or leaving a negative emotion behind can be treated by hypnotherapy. The actual underlying reason behind the hurtful memory would be more relevant for the hypnotherapist as it differs from one person to the other. Hypnosis methodology can successfully be applied to handle that memory which means you will be able to deal with its effect and undo the damage it causes you. Whether this means forgetting /wiping it is a very relative thing.
Next Steps
Take an appointment with a hypnotherapist or a counselling psychologist who is trained in hypnotherapy , like me, to have a discussion on understanding it better.
Health Tips
Wiping off a memory because it troubles you, in hypnosis terms, simply means you change what the memory meant/means to you. It does not mean you undo that part or time of your life. A hypnosis specialist can give you more insight on this during a session.