That is what your inner child should be saying to you. You need to literally be paying attention to that inner child and not self-medicating, trying to suppress the pain and feelings but getting all that pus out. Grieve for your girlfriend, the relationship that wasn't/is no more, your childhood, the loss of your father, etc.

Yes, in a sense you do have to start over but this opportunity of learning to care for yourself better so you do not have to "crash" again in the future is a really good opportunity.