Most of the time, my trust is well-founded - we've established a flock that is well-suited to pasture lambing. Our guardian animals, for the most part, do their jobs well. Our border collies have the intelligence to change their approach to herding once the lambs arrive (the ewes are much more aggressive with lambs at their sides).
Sometimes, though, I find that things don't work out like I plan. Today, for example, I found a lamb that had been injured by a guard dog - sometimes the dogs lick new lambs excessively, which wears a raw spot on their skin. This afternoon, one group of ewes decided to ignore the electric fence and broke out of their paddock - twice! They were telling me that I'd misjudged the quantity and quality of the forage in their pasture.
I'm so fortunate on days like this to have an understanding and reassuring family. When I make mistakes like these, I tend to get down on myself. My family helps out - Sami and Lara doctored the injured lamb, and everyone was understanding when I needed to run back to the sheep to put them in their pasture for the second time.