Hi there and Welcome!
I, too, have been off and on for years. The good thing about the support here is that no matter where life takes you, its always so welcoming when you return.
Sorry to hear about the IR diagnosis. I hope that as you move along your journey, you will find the way to manage your IR in a way that works just great for you and your lifestyle.
Here's a hug to you
! It may not be easy, and it will probably require some trial-and-error, but you can do it! I don't think it's so much will-power as it is either trying it until you find what works best for you or just sheer determination. Remember, "as we know better we do better"
... or at least thats what I'm trying to get myself to believe
.