Stress

The real estate field is an emotional roller coaster. You can be on top of the world after selling a multi-million dollar home one day, then the next day find yourself sitting in an empty open house. It's hard not to get emotionally and personally invested in real estate deals; a lot of things can go wrong before the dotted line is signed and the deal is done.

 
"Stress? Yeah sure, I can do that for you." (Source)

Sellers can take their property off the market, a buyer can leave your real estate company, an agent can screw up a deal, or the buyer and seller can never reach an agreement on price. Oftentimes, a deal can go south regardless of whether you did anything wrong, and that commission slips right through your fingers. 

Likewise, the normal stuff like stiff competition, a fluctuating real estate market, and complex transactions can push anyone right to the brink. How to cope? Yoga, mantras, punching pillows, long silent walks in the park, and hiring an assistant can all help.

It's important to understand that this career is a lot like being a gambler. You've put your whole life on the table and hope that no one at the table is bluffing. While stressful, it can also be immensely rewarding when you sell a property, or when one of your agents closes a big deal. You can take this quote from Buddha to heart: "Chaos is inherent in all compounded things. Strive on with diligence."

Or take Kenny Loggins' advice: "Know when to hold 'em, know when to fold 'em."