Humans brains are capable of adapting to almost anything. Expose yourself to hectic days and learn to deal with difficult people long enough...and soon you'll find yourself living through a hectic day and dealing with such people with a breeze, you can say "What? You call today hectic??'' or ''You call yourself difficult?? Puh-leeeze''
But don't forget to have enough rest and sleep. Our brain organizes the memories of all the lessons we've learned for the day while we're sleeping. Without enough rest and sleep, we break down. My secret to not breaking down is coffee and sleep. While I don't sleep I drink coffee, and while I don't drink coffee I sleep
