You're singing to me Rod! Being active is an emotional rollercoaster for me; I know it's benefits and know that once you get into a routine your whole being changes. It's a wonderful cycle when you are in the moment and yet so hard to get into if you're not. I need a huge kick up the arse when it comes to exercise - to get back to being fair, fit and over fifty LOL!
You have a joie-de vivre which augments any desire. Life is so precious and when you have potential morbidities lurking it's the best kick in the arse ever. Yes, acceptance is key. I'm just in denial and darn right lazy!