eli5: What does mindfulness mean? I see it in every mental health article but I don't understand it

I've read dozens of explanations in this thread but nothing actually explains how it benefits. you.

So I'm stressed out, I'm at work and have most of my staff off sick or on leave so I'm working 4 or more people's roles at once. My car was broken into and now a set of keys to my home are out there somewhere. I get my car back after getting the broken window repaired and the car has just broken down and I need to figure out where I'm going to get $2k for all the repairs. Meanwhile, I have problem after problem with other people at work not following procedures that don't affect their job but cause me all sorts of issues so the other parties don't feel any need to focus on fixing the situation. Add in everything going on in my life, isolation, depression, etc.

How does distracting myself for a few minutes give me the tools to deal with the actual problems that are stressing me out?

/r/explainlikeimfive Thread