Things can go wrong if you spread yourself too thinly over a wide range of different work types. Working in areas where you have little or no experience increases the risk of an error. In addition, those files can also be very stressful and demand a disproportionate amount of your time and energy. A good strategy to survive and flourish as a practitioner in the current legal environment is to define the work you will do and focus on being exceptional at that defined area of law. It is also sound claims prevention practice.