When looking for ways to increase your effectiveness, you probably have to deal with new theories or trends in the field of sales techniques. Their creators stubbornly preach about ‘the end of the cold call era’ or about ‘sales 4.0’. One thing remains unchanged - prospecting, or the art of acquiring new clients. The most common reason for the failure to sell is an empty sales funnel. That is why it’s so important to systematically search for new sales opportunities.