A plan is necessary, however, we recommend that you do not download a Business Plan template from some free website. These will have you doing clerical work when you really need to be thinking.
This is what we recommend you think about:
1. You need a strategy.
2. You need the right person or people to support you.
3. You need to be able to execute your strategy.
4. You need the cash to do so.
If you think about these four things you will cover all the bases.
Then think in terms of time. From the day you start:
1. Where do you want to be in 3 months?
2. In 22 months?
3. In 3 years?
Answer these questions and then write them down.
The inspiration for this simple yet effective approach to business planning comes from www.gazelles.com which we recommend highly if you truly have an entrepreneurial spirit.