When I feel like that, and I do, often, I think about my plan and try to do one little, simple thing to advance it. It could be something that only takes minutes. Doesn't matter.
You have your plan, you told it to us. Do whatever little thing you can to advance it, then maybe try to get absorbed into something else for a while. Yesterday Sweetie commented that I hadn't shaved in two days and asked if it didn't bother me. Well it hadn't, right up until then, because I was absorbed in a project. I Immediately got up, showered and shaved.
Now, my beard isn't like your chest. I don't notice it unless I touch my face or look in a mirror. Your chest is there in half your field of vision all the time, so I know it's going to be tough for you.
Remember that transition is a marathon, not a sprint. Plan and work for the long haul. Celebrate progress, not the distance still to go, and don't let it consume your whole life.
It's not perfect, but it usually works for me. When it doesn't, come here and cry on our shoulders. It's what we're here for and only a jackass thinks it's not manly to cry!