A person can regularly engage in self-sabotage and not recognize the self-inflicted damage they are causing. When it comes to the job search, after continually interviewing with several companies and not receiving any offers, it may be time to take a step back and assess the situation. While most people find fault with the company for requiring too much from an applicant, it is also possible that the job hunter needs to take a good hard look at how they come across in the interview process.
You can turn things around by self-reflecting, being honest with yourself, acknowledging your weak points, working to improve upon them and being open to feedback and constructive criticism.