Slightly off topic but this practice of talking-out-loud to get yourself doing stuff is also beneficial to people with executive dysfunction. If your executive function is impaired you generally don't have the "internal monologue" or the voice in your head. This makes seemingly simpler things like taking a shower, driving, or eating, very difficult! I'd often "forget" to eat, simply because I could not get myself to start.
I found that it helps to announce (not necessarily loud) what I am to do, and the steps to do so. ("Okay we're going to get up and walk to the kitchen.", "We're walking now")
Though for some reason I use plural pronouns for myself -- we, us etc. Does somebody else do that too? :)