I am a firm believer in evidence based medicine. I might be too harsh on alternative medicine.
Chiropractic is a form of alternative medicine and features pseudoscientific ideas. Positive energy flow mentioned before is also a very vague term.
There are reasons why it might seem that pseudoscientific methods and specialists are able to have a positive impact on you. These might include placebo, coincidences, attributing improvements caused by other procedures you have performed, these specialists having great social skills.
My suggestion would be to stick to proven practices. Instead of chiropractor try to find some core strengthening instructor/class with good reputation.