You can't be all things -- or do all things -- for all people.

A life without limits means rarely saying "no" and considering everyone else's feelings before your own. Not only are these people-pleasing habits wholly exhausting, they put you on the direct road to burnout, a major health hazard in its own right. They disregard how much work or effort you can handle on a regular basis.

That's where boundaries come into play, according to researcher and public speaker Bren Brown. In a video posted on the subject last month that's continuing to go viral online, Brown explains how establishing your own personal fences can do wonders for your wellbeing.

"I'd rather be loving and generous but very straightforward with what's okay and what's not okay ," she said.

In other words, boundaries aren't a way to keep people out. They make life as enjoyable as possible for you and for your loved ones as a result.

We consulted boundaries expert Chad Buck, a clinical psychologist at Vanderbilt University's Work/Life Employee Assistance Program, on the life-changing power of establishing a clear-cut view of what you're willing to tolerate. Below are a few great things that happen when you learn to set your own limits:

1. You're more self-aware.