There is a hidden hell to design work. It's mentally easier to do most labor work than it is to do design. Reason is, a lot of labor jobs just require you to follow directions, and the majority are complete repeats of something that has been done before, over and over again. Most design work has no directions, and almost every job is something brand new. A customer wants the designer to make something great without any hints as to what they consider to be great. So now it becomes two jobs. First to study the customer and figure out who they are, how they think, and what they expect the finished piece to be, and then the designer has to carry out the task, risking judgment in hopes that the customer will be pleased with the outcome.