For example, if you have never worked in a fast-paced sales environment, focus on your desire to learn. Highlight the fact that you have observed fast-paced sales environments, and those situations appeal to you. At the very least, you could use the fact that you have always been very proactive in completing tasks as efficiently as possible. Or maybe you have taken a course or two in economics or marketing that might have provided tangentially relevant knowledge. In contrast, if you are a strong match for most of the requirements, generate specific, results-oriented examples to demonstrate these skills.
Highlight the fact you are willing to learn if you have no experience in something and your eagerness to learn. Also highlight if you've observed this type of work before. And use your strengths to highlight you as a professional. Also, add any related courses in relation to the you've taken in relation to the job.