I find I'm having to let go of some of my own control issues. I have had to hold firm on a few things that I know are safety issues around the horses and some of their habits that over time are budget busters. So far, though, everyone is happy with the arrangement. DH was out on the porch yesterday evening, taking an interest in things - which is part of his son's plan.
The biggest hurdles right now are weather and expenses, but overall, we're making forward progress.