As part of reconciling those parts within that have not served me so well I have found guided meditations to be life transforming. There is one that I have used more than others and is a meditation where you meet each sub-personality, review its role in your life and reassign it a new role in order to bring it in far more a harmonious balance with your true nature. Most of the work I have done with people has been around the need to balance ourselves - both our light and dark side, I would say balance of what is, more so than changing what is..
Now I practice being still, quiet, just focussing on the breath in order to experience the power of spirit within. I try to make time every day but is still something I need to master!
My website
Your Soul and Life Purpose Can Be Found has some free meditations to download under the free inspiration section.
Much love to you on your journey,