Fulfilling the role of leader in a business can be an overwhelming, daunting, and thankless job. Running a business is hard work; it's long hours, the work never truly ends, and you're never off the clock in your own mind. Does this sound like something you can handle? Truth be told, you can handle it. If you find something you're passionate about, you'll find a way to make it work. Here are a couple pieces of advice from leaders all over the world that ring true. Enjoy!