Analyzing the Market: You cannot afford to operate on the basis of assumptions about the market and customers. You need to conduct a thorough analysis of the prevailing market environments, your strengths & weaknesses and the existing competition. Study your target customers and get in_depth knowledge of their needs and preferences. Based on this, you can determine your marketing objectives and position your product suitably.
What was the outcome? As much as 90% businesses started by entrepreneurs and small business went busted or failed within a year. I experienced one of the many busts few years ago (with my cafe business) because i don't really have a proper and "the few solid sheets" called a marketing plan.