When I ask entrepreneurs and small business owners, it is not unusual for not having any marketing plan. I once read that Sir Richard Branson never had any marketing plan when he started the 1st Virgin business many years ago. In fact in one study of entrepreneurship (I couldn't recall the name of the study) was that as much as 50% of entrepreneurs and business owners don't have a business plan and marketing plan when they first started the business.
Now for the good stuff. I am going to tell you how to set up a modern MLM marketing plan that actually works for you 24 hours a day 7 days a week. The first thing is to find a high quality network marketed product or service that you can be passionate about. Being passionate about it makes it much easier to stick with long enough to really learn about it and see the benefits. Your passion will be felt by those you talk to about your opportunity. Personally I am passionate about health and nutrition. That is why I market what I consider to be the highest quality nutritional products available.