<human>: Give me the gist of the text in a nutshell

For a little context, I'm in week 14 of training for my first marathon. I just completed an 18-miler on Saturday - my longest distance yet - and even though I'm very proud of my accomplishment, I felt like I survived it more than I conquered it. This is on top of feeling sluggish and slow lately during my runs, experiencing more aches and pains than usual, and feeling very ready to take a break from running. Fast forward to last night, and I was 4 miles into my 9-mile run. My hips were aching, my willpower was fading, and I wanted so badly to quit. Then something inside of me snapped, and I got angry. I was tired of feeling like a victim. I was tired of letting my body hold me back. I was tired of struggling through my runs. I was just plain pissed off, so I unleashed. Normally, I run a 10:00-10:30 pace for my longer runs, which I had been doing for the first 4 miles. But then I took off and ran the next 4 miles at a sub-9:00 pace. For about a mile, my GPS watch said I was running close to an 8:00 pace, which is pretty rare for me. And you know what? It felt **awesome.** All my aches and pains went away, and for the first time in a long time, I felt strong. I felt invincible. Maybe it's cheesy, but I felt like Forrest Gump during the scene when he starts running and his leg braces break off and fall away. My husband was running with me, and he was like, what happened to you?? I told him I was pissed off, and he told me I should run angry more often. :) That 9-mile run gave me more confidence than my 18-miler. Go figure.
<bot>: I ran angry, and it was amazing. Sometimes we need to listen to our bodies, but sometimes we also need to tell our bodies to shut up and do their jobs.