I also work full time. I sign up for at least one class a week, September thru May. That way I know that I have at least three hours a week to sew.
I take the summers off from taking classes. As most of my time from May thru September is spent fishing, at least the weekends.
I do still try to find time to sew during the summer months tho. I have yet to take a block(s) to handsew to the marina but I have taken books/patterns, and left the marina for a few hours to hit one of the local quilt shops in that area.
I happen to love both hobbies very much and try to do what I can when I can. Warm and sunny weather, go fishing on the lake, cold and snowy weather, go fishing in the sewing room.
DeeDee