Nebo D. Lukovich
There could be various causes of self-sabotage. For example:
How to determine the cause of your self-sabotaging behavior and remove it?
The Determination Technique goes like this:
These are the three basic ways in which you can remove most of your self-sabotaging behaviors and traits. However, some of them will be so deeply ingrained in your subconscious that you will need much more comprehensive approach, dealing with many of the above-mentioned types of inner obstacles. For those cases, again, you can refer to the Reintegration System, but there are also numerous great psychological or spiritual techniques that can be found on the Internet or within the professional literature.
One more tip: regular sitting meditation and mindfulness will surely help you, not only with the self-sabotaging issue, but also with all other aspects of your life.
Good luck with your inner work!