I'm glad you feel grateful because it really is amazing that we have bodies that move and can enjoy the little things, even when the big things are hard.
My gym motivation comes down to something simple... I need to expend energy in order to make sure I can fall asleep. I'm glad you've taken up boxing, it can be so satisfying and so exhausting. You'll get so fit. I think you've got a good balance between them all.
RE: Non stop