Need advice on my strategy to convince my vanilla wife to cuck me.

It took me almost 20 years of gently leading her to the pont where she was ready to fuck another man and the first time she did there was no going back she was hooked, the important word in this post is lead you will never get her to enjoy it if you push.
I'm reading here that unless she already has a natural high level of sexual curiosity it is all about patience and building her upto to it over many months or years. It's about making sure she takes the decison ultimately. She needs to be so assured and confident with her partner first befor she will be willing to take the lead herself and take the final steps. I'm guessing its all about getting out of your shy wife what you put in at the end of the day; but when she has taken that step there can be no going back for her.