@brettiquette thanks for sharing your path. I figured that just as the PCa diagnosis hit me hard, I will it hard back (Work Hard, Play Hard). Good luck and stay strong with your therapy plan.
I think the whole diet is more of a cold turkey kind of approach. You just do it, be miserable couple weeks while going through the withdrawals of no sugar, fatty meats, dairy or alcohol and then you kind of get over it. I found that being exposed to these products, when eating with my family or with the coworkers, is also a good way to test your will power.
All the best, stay strong and be positive.