Step out of your own self and keep your distance from it. Practice detachment from your possessiveness, and surrender everything to Allah. Become His doorman at the door of your heart, obeying His command by admitting those He instructs you to admit, and respecting His prohibition by shutting out those He instructs you to turn away, so that you do not let passion back into your heart once it has been evicted. Passion is expelled from the heart by resistance to it and refusal to follow its urges, whatever the circumstances, while compliance and acquiescence allow it to gain entry.
This is an amazing book for anyone trying to understand the Sufi Islam and extend their knowledge about the purest teaching of Islam. Hazrat Abdul Qadir Jilani (rz).
You can view the whole book here: http://www.al-baz.com/shaikhabdalqadir/Books_and_Text_of_Wisdom/Sirr_al-Asrar/sirr_al-asrar.html