In many cases business plans are very important but so much of the time it's a plan to try to convince someone else that you know what you are doing with your business like banks, investors, partners, etc. Now it's true that a well written business plan can also be a major benefit to your success as well if done right. It can guide you and keep you on track and can be the vehicle to get you were you want to be especially with so many outside forces now days that bombard you. A plan can be extremely important to your success especially when you look at the statistics that says 51% of small businesses fail sometime during their first 5 years.
To me a small business is one of the best things you can have if you enjoy operating a business; however, it does require a lot more than just enjoying ownership and running a business. Especially if you are starting a small business and even if you have had a business for many years, you should know what you want for your future. Never guess about your business. You see, without a plan, you are just guessing. We business people work hard and we always continue to hope for the best but when we guess, we're taking a lot of risks. You've probably heard the old saying from an unknown author that says, "If you fail to plan, then plan to fail."