It is time you rethink that story you built around that specific topic? Ya know the one story that makes you get a knot in the pit of your stomach every time you thing about it or each time that topic comes up. The one you feel will never change or be resolved, and has you feeling weak or disempowered. Find a way to build a more empowering one, that comes from space that reflects hope and your pure potential. You have to find a way to lighten and lessen the limits you built and placed around this topic. As this is your only blocker to it.
Make a game out it, let your approach be fun. Come from place of curiosity and it will take away some of your resistance. Doing it from this place, gives you more leverage to see better results. Keep a personal journal about it. Encourage yourself to come at this topic from a new mindset and hold true to it for a week, then test your results. This is also great way to build your self trust by committing to this, along with growing your confidence. Be sure to let me know how that worked out for you.