"but it doesn't matter..."

Another little trick I've been using out of my trusty guide book to keep negative thoughts at bay is adding the phrase "but it doesn't matter" at the end of any/all of my complaints. Ideally I will learn to not think them at all eventually, but for now "but it doesn't matter" is working pretty well. This week I am forcing myself to snap back into training mode, and that started yesterday. This week of training is going to particularly challenging; not only because I'm coming back from a vacation, but because it's going to be in the 90s and 100s everyday this week, which means I will probably have to wake up even earlier than normal to run while it's cool (ish). My 4 mile run last night was stiff and slow and it was still really hot even though it was after 9 pm.
I decided to get up early and do today's 6 miles, so I woke up at 5:50 and hit the pavement. Here's a little rundown:
I'm really sleepy and it hasn't even been 8 hours since my last run...but it doesn't matter.
My legs are stiff and my neck is sore...but it doesn't matter.
My headphones just died...but it doesn't matter.
My feet feel like cinder blocks...but it doesn't matter.
I'm dehydrated...but it doesn't matter. (this actually does kind of matter, but I knew 6 miles wouldn't kill me.)
It's hotter than hades...but it doesn't matter.
So yeah...I have some positivity and serious rehydration to work on.
On the upside...last night I got to see a beautiful sunset, and this morning a gorgeous sunrise. Those are the things that relax me and remind me why I'm doing this.