It does really help you do you job well if you enjoy what you are doing. I feel really lucky that I’m able to work in a job where I’m able to help people. I know that everything I design is being made to help someone feel better. That means that I really are that what I make is the best that I can do – I feel a lot of emotional attachment to the products and want them to succeed.
As far as devotion goes, it is important to not get too overwhelmed by work, as it is not healthy to spend all of the time, both in and out of work, thinking about your job.
Having a healthy balance between caring about your work, and also being able to relax well at home is the key to having a stress-free job.