I think it's great that you have found a way to get things done that you need to everyday. I do think it's quite possible to feel flat if you have nothing new or fun to look forward to. I think it could be worth trying out if you can handle being a little less rigid with things. Maybe set aside an hour or two a week for something different like a social event, hobby, going some place new in the local area, etc. You could occasionally do something larger and set aside money for it and those could be the big things to look forward to like an opera or a trip somewhere. Of course, you'd have to figure out what works for you and your mental health and if it's too much.