It seems like once one starts down that slippery slope things quickly get out of hand and you never make it back to your routine. The truth is you are probably ready for a new routine. (Don’t panic you don’t have to start all over.)
Just do something out of the norm today that gets you moving. It could be something that just needs to be done.
~wash the car by hand
~vacuum every room in the house (if you still own a traditional vacuum)
~go for a brisk walk
~ wash four walls
~ defrost the refrigerator
~ turn up the music and dance, just dance
After a day of doing these things you might be prepared for your regular routine.
If that doesn’t work just keep cleaning until it does.