Implant battery life: the greatest fear of mine. I have spent the past 11 years wondering about this supposed battery that is inside of me, powering machines that keep me alive. To this day, I don't know if it actually even exists. I'd say I don't care about it, but I do. This aspect of my life keeps me on the edge of my seat.
It reminds me of something i heard about Steve Jobs. He has a quote that goes something like: "Live each day as if it was your last". i can't say i've lived up to this mantra on a daily basis but I try to. This insane battery complex that I have is a catalyst to my motivation to do so.