Having a business plan is so important to you as an online marketer. But most people, who start online businesses, especially small businesses, do not really take the initiative to make a business plan. Probably they think that it's not necessary. But for sure there is little you can achieve in life without proper planning. More so in the contemporary times when survival depends largely on one's ability to organize your physical and mental resources well. The future is actually for those who are organized. And the future of your business is dependent on your good planning.
At this point, you may be tempted to skip writing a business plan altogether, viewing it as an unnecessary exercise in jumping_through_the_hoops, suggested by some old business professor who probably never held down a "real" job anyway. Maybe it's okay as an assignment for an MBA class, but it would be just too confining and irrelevant for today's fast_paced business environment. Anyway, you're ready! You've thought about this business venture for a long time and talked it over with friends and everybody agrees it's a great idea. Best to strike while the iron is hot!