Change comes from within. If you change internally, physical circumstances and situations will also change. However, bear in mind that as you confront your defects and combat your lust on a physical, emotional, and mental level, you will face resistance. This can occur in the physical world through ordeals, as well as psychological elements that you must comprehend and overcome.
Remain steadfast in chastity and you will have the energy by which to combat your defects. If you fornicate, you will have absolutely no force by which to work in yourself and produce change. Fornication destroys the soul. Chastity produces harmony, peace, comprehension, and love. Practices will not help if you do not abstain from the orgasm. In fact, you will make yourself worse.
I suggest you work with the magic of the roses as described in
Esoteric Medicine and Practical Magic in order to help you maintain equilibrium as you defend your vow of chastity.
Remember that when practicing alchemy, you must not build up too much fire that it becomes uncontrollable. As Hermes Trismegistus taught, "Gentle heat and much attention."
In relation to performing this work, the only solution is to be steadfast in discipline and prayer. If you succumb to temptation, you only damn yourself. Remember that you always have a choice. Despite facing such challenges, salvation is within you. Wage war against yourself in order to find peace!