I think that NLP sucks overall, it's mostly a marketing tool and sometimes worse, but there are things supported by science and some techniques for quick interv

I think that NLP sucks overall, it's mostly a marketing tool and sometimes worse, but there are things supported by science and some techniques for quick interventions are integrated into psychotherapy ("NLPt psychotherapy" if you want to check it). The most down to earth book which you can use to help yourself in this case is "Change Your Mind and Keep The Change" by Steve Andreas. Good luck!