Whether you achieve success with an upcoming presentation or project will depend largely on your own ability to believe in it. Sometimes the best way to sell something is to love it enough to buy it yourself. As you move through the process of preparing for an important endeavor, keep in mind that you need to fully integrate yourself into it. You will need to completely invest your passion and your positive thoughts into it if you are to convince someone else of its value. When you achieve that level of passion, you will find great success.