Rekkert, just how much time do you spend on those displays? They look fantastic. Are they mostly copied from last model? In what software do you make them?
Rekkert, I hope you are feeling better. I know how burned out you can get when doing 3D. I've been doing it for 2.5 years 9 hours a day without a vacation and by the end of those 2.5 years I barely had any will to work.
All I can say is get out in the nature and away from the computer. If you have pets, spend more time with them. For me, their stupid shit always makes me laugh.