I agree with most of what everyone else has said here. Give yourself some Grace! Because you have a sewing room doesn't mean you have to sew all the time!
I didn't sew for many years when my kids were teens and also when I worked full time. There are only so many hours in a day and you should enjoy the ones that are yours to relax in.
Taking a class is a good motivation too. I wish I had the time to take one, but with 3 grandchildren arriving this year I need to work on my quilts I have started. Then I will play again. I am enjoying these baby quilts though! So cute.