Bethany1, learning to do the simple stuff to your own bike is SO empowering. It makes me feel like Super Woman. You are going to love it. Get your son to show you how to change a tire!

One strategy I use for dealing with this heat, is I don't pedal unless my speed has dropped below about 8 mph. Lots of long coasting. It's hard not to be impatient. But when I went home for lunch I used that method, and although I was impatient at first, I suddenly noticed that I was halfway up the next slope and finally needed to pedal and I'd been off in my own little world for ages, and forgotten about being impatient.