A blessed change of heart
Sacrifices are funny things. They are often little more than giving up something that we realize along the way we never truly needed in the first place. "Need". I feel like that is the key word for something to qualify as a sacrifice under the conditions you've stated here. To give up something you need, or at least, something you are under the illusion of needing, and as you discovered (and I am about to repeat) that the very thing you thought you 'needed' was far from such, and rather it was the sacrifice itself that you needed.