After 3 years, my battery wasn't holding a charge the way it used to. I previously ALWAYS had enough power to go into the evening. And I got some lint stuck in my headphone jack recently that was keeping me from using my headphones.
Repair went great. It took an hour and a half from beginning to end including breaks. If I did it again, it would be quicker just because I have a better feel for it.
The video from Gwendolyn Gay made me feel like I could totally do this. And I could! And whenever I felt daunted, I just said the word "spudger" and smiled.