Well done for gritting your teeth and just making yourself get on the bike. I've had a couple of days in the last few weeks where I've felt the same and just getting out of the door is the hardest bit. I put a lot of it down to the shorter days, but I always feel better once I've got it done. As you know, I'm a runner only really, but I do think that something like a zwift set up one day (when I've got space) would be a good benefit to my overall fitness. Need to work out some space and then do some shopping for all the toys needed to get set up.