Writing a good proposal is a critical skill in many occupations, from school to business management to geology. The goal of a proposal is to gain support for your plan by informing the appropriate people. Your ideas or suggestions are more likely to be approved if you can communicate them in a clear, concise, engaging manner. Knowing how to write a persuasive, captivating proposal is essential for success in many fields. There are several types of proposals, such as science proposals and book proposals, but the same basic guidelines apply for all of them.