I usually go gravelling to my accountability partners and they tell me to suck it up....
Okay, not completely like that, but exercise really does help. It gets your endorphins going and it gives you a sense of accomplishment for sure.
You can do a lot of things, but what you really have to find is your motivation.... I know someone mentioned on here one day that they make note cards with clothes they want to buy at goal or things they want to do. They flip through those and remember why they're on this journey and their rewards at the end of it.
Dust yourself off, get back on the horse. We've all been there