Stress comes from knowing what is right and doing what is wrong
I think one of the mistakes typically with authors is they have written more books than they've read.
Work faster, smarter and harder
Learn what you are good at and exploit it in service to others.
As your employer, if I see that you have to work hard to get your results, yet your coworkers achieve their results with little effort, don't be surprised if I'm not all that impressed with your hard work.
Make yourself happy and surround yourself with people who are cool with that.