How to become more patient with everyday annoyances

Everyday inconveniences can throw us for a loop, but we can learn to be more patient during these moments.
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(CNN)When the elevator's running slow, you clench your teeth and curse under your breath. If you still haven't received your latte or a restaurant table, you snap at the barista or hostess and demand to know why it's taking so long.

Everyone has those moments where they run short on the ability to stay calm in the face of frustration, adversity or suffering, also known as patience.
"We have expectations of what should be and what is an appropriate time to wait in line, or how quickly I should be able to get somewhere, or how someone else should act or how I should feel," said Sarah Schnitker, an associate professor of psychology and neuroscience at Baylor University, and author of the 2012 study "An examination of patience and well-being."
    "When those expectations are violated, oftentimes that's when our emotions become dysregulated," Schnitker said.
      Impatience isn't always bad, but people who are chronically impatient can experience more stress, which increases their risk of health problems such as cardiovascular issues, Schnitker said.
      Some people are more patient than others, but we're not "doomed to whatever kind of natural setpoint of patience we have," Schnitker told CNN. "With intentional practices, we can cultivate our patience, and make it easier for ourselves to wait."
      Here are some of Schnitker's recommendations for developing more patience.
        This interview has been lightly edited for length and clarity.
        CNN: When you're impatient, what's happening in your brain and the rest of your body?
        Sarah Schnitker: Your emotions become activated. When this happens, it's kind of a whole-body response. Our heart rate may increase. The amount of electricity coming off our skin (called skin conductance) might change. It also depends on what emotion might be occurring. Anxiety over missing your next meeting if something doesn't happen in time might be a little different from impatience that's more driven by anger. But with all these things, your physiological system is aroused and starts to enter a stress response -- a fight-or-flight type of arousal.
        Sometimes impatience helps us focus our attention and prepares us for action. But when it's a situation that you can't control or there isn't a lot you can do, changing your own emotions is the option you have -- basically down-regulating them and bringing yourself back to a state of calm.
        CNN: How can people become more patient?
        Schnitker: Cognitive reappraisal -- where you think about the situation from a new perspective -- or benefit findings -- asking yourself what positives