As a an Entrepreneur, you will face problems every day, some are easy to handle, others are critical and might jeopardize your business.
First thing to do is to find your strength points and your weakness points. once you determine them, you should build over your strength, and eliminate your weaknesses.
Surprisingly enough, the challenge always comes with eliminating your weaknesses. Your weakness always comes from a failing project or an under performing employee. It always needs emotional fortitude to face this employee or admit the failure of one of your projects and take action towards it. But its inevitable that if you did not take actions and fast, it will haunt you until it grows big enough to nail you.