When you start out as a business owner or consultant, you're excited about any work or any client that comes your way. We've all been there—and most of us eventually learn better.

We've all at least regretted working with a client, and at worst the wrong client has caused bad lasting effects. The same goes for employees. The wrong hire can be a disaster.

Let's get into what today's landscape looks like, see how bad clients behave, and learn the steps you can take right now to avoid massive failure.

What's your business's biggest challenge?