Do you think that's just the way it has to be? That it's wrong to show that you enjoy your job, or that doing things elegantly – getting best result for the least effort – is somehow cheating?
When you were young, did your parents frown and complain about their day at the office or factory? Do you do that now?
Would you like to enjoy work more and get better results more easily? If so, start by giving up all the fixed points of view you have about work. Then ask “What if work were easy and fun?”
Are you willing to enjoy every moment of your work life, AND got the best results, AND make money?
It is possible. Many people create good income from doing things they enjoy all the time. How? They choose to do things they enjoy well, rather than suffer and do badly things they don't.
Happiness is just a choice and a smile is very good for business.