This type of client comes in many guises, but ultimately will cause you problems in one way or another. It's often better to not take on work from the more extreme of this type of client, but in most cases you will not have the luxury of knowing how difficult a client can be until you have started working with them.
Difficult clients will show at least one of a number of characteristics that you can learn to identify before you agree to engage in any work for them. These characteristics include:
Lacks a basic understanding of technicalities of the service you provide: This isn't a definitive indication of a client who can be a handful to manage, but its's certainly a red flag that should raise your suspicion—especially when combined with one of the other warning signs. A client who doesn't understand the basics of the technicalities of the service you offer is much more likely to demand solutions that are not realistically achievable either on a technical...