Can mindful parenting de-escalate a 4-year-old's tantrum and repair connection?

[RobertLL]

I'm a parent to a strong-willed four-year-old, and while I strive for patience, our daily battles over getting dressed and leaving the house often end with me yelling, which I immediately regret. I've been reading about mindful parenting as a way to break this cycle and respond to her big emotions without losing my own composure, but in the heat of the moment, all the theory goes out the window. For parents who have actively worked on this approach, what practical, in-the-trenches techniques helped you pause and de-escalate during a full-blown tantrum, and how did you rebuild connection with your child after you inevitably had your own less-than-mindful reaction? I need real strategies, not just ideals.