When you get into business, it's not for just the fun, its also for the profit. Purpose will start the business but profit sustains it. My past Boss/Mentor, Sam Brooks said, 'If your in business and not making a profit, then you're going out of business' - what a true statement. The best way to prevent that is planning, understanding and managing your finances.
The questions you must ask yourself all can be answered within your financial statements.
KNOW YOUR BUSINESS!!