any tips to help wearing chastity for long term? or "longer" term?

A little bit about myself is - I always imagine wearing a chastity device for long time or even permanently, and then jerking off myself. But in reality things is much more difficult. A few days ago I hadn't jerk off myself for only a few days and then I tried to wear a cheap CB for test, to see how far I can go. My mistress will have a plan of keeping me in chastity and not letting me out at least 2 months of time. She is nice and lets me test it out myself first before doing it for real.

In my 28 years of life I could never hold for more than 2 weeks of time


Only after 2 days in chastity test, I was almost ruined. I couldn't work well, I like to eat but I do not enjoy my meals, I couldn't sleep. I had been actively trying not to think but the little thing just getting crash to the cage. I always told myself to claim down , I always told myself to get used to it and this is my new life. I always told myself I did everything now all for my lovely mistress. However, last night I could barely sleep any. In the early morning, I erect to wake up. I broke down. I released myself and jerk off vigorously, it was a big orgasm.

I fail again.

1. Any tips to help wearing for a longer time? while not affecting daily life too much.

It is lucky that I am day off today otherwise I must not have enough sleep to work