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Of course, we all want to do our very best work. But is there a difference between simply striving for solid quality and obsessing so much over every last detail that it becomes completely counterproductive? To put it simply: yes—a big difference.

While I never want to be the one to discourage you from putting your all into something (hey, your dedication is admirable!), there are a few specific instances when it’s acceptable to stop chasing absolute perfection.

"Uh, like when?" is likely the question you’re asking yourself now. Well, here are four times you have permission to stop fixating and just settle for plain ol’ good enough.

If you want your employees to work well together and get more done as a team, it might help to pipe in some upbeat tunes. Research from Cornell University has found that employees who listen to happy music—like the Beatles's "Yellow Submarine"—are able to cooperate and make group decisions better than employees who work without a background soundtrack.

"Retailers certainly use music routinely with the intention of influencing consumer behavior," says Kevin Kniffin, an applied behavioral scientist at the Charles H. Dyson School of Applied Economics and Management at Cornell University and lead author of the study. "The point of our new research is to draw attention to the role that music can have for employees, whether in retail workplaces or any other kind."

Researchers played "Yellow Submarine"; "Walking on Sunshine" by Katrina and the Waves; "Brown Eyed Girl" by Van Morrison; and the theme song from "Happy Days" on a loop in a workplace environment, says Kniffin. "A definitional feature of happy music is that it has a rhythm to it," he says. "Happy music significantly and positively influences cooperative behavior," Kniffin points out. "We also find a significant positive association between mood and cooperative behavior."

A 2009 study published in the European Journal of Social Psychology revealed that sitting up straight and sticking your chest out can boost self confidence, while slouching can lead to negative thoughts. Another study found that good posture actually increases your productivity and creativity.

Does it ever seem like some people you know are advancing rapidly in their careers or businesses, while you seem to be just plodding along? Chances are you're not doing one simple thing that can make all the difference to achieving your goals. You're not putting yourself first.

In the personal finance world, experts often advise people to "pay yourself first." The idea is that when a paycheck or other payment comes in the first thing you should so is put a portion of it into your savings and only then pay your bills and other financial obligations.

Most of us, of course, instinctively do the opposite. We first pay our bills and then put money into savings if there's any left over. The problem, of course, is that there very rarely is any money left over. So our bills get paid, but we never manage to save much, making it impossible to reach our financial goals. This is why 401(k) programs are so powerful: They literally force you to pay yourself first by putting money into savings before you can pay anyone else.