My wife is very vanilla and I'm pretty kinky so I have pushed that side of myself to the background for years. Several months ago I decided to bring up the subject of chastity. She was dubious at first, but willing to see what it was about. Fast forward to now and she is pretty into it. She decided to use a d20 to determine my lock up time. Last week she rolled a 7 and I was ok with that because I have gone 10 days before when doing self lock ups. However, she got sick and when the 7 days were up she said she didn't feel well enough to play with me so she decided to roll the dice again. Because as she said, "I make the rules right?" She rolled an 8 so here I am on day 12 aching to get to day 15 and hoping she doesn't change her mind again. She is feeling better and teasing me nightly. I think you should at least try to talk your S/O into being your key holder if at all possible because the difference between being self locked and having a keyholder is incredible.
Having recently experienced the same, I could not agree with you more! Have a great time. Congratulations on your newfound success!
Pretty much exacltly my story. She's still figuring things out, we're moving slowly, but day by day by week she's more into it. Good luck to you!