I found the most powerful comment was the first sentence in the "Pick Your Niche" section which says
"You cannot be all things to all people".
Too often business owners, particularly in the early start-up stages of their business, say "yes" to any customer that calls and later find out that this customer takes up too much of their time (usually unpaid) because they are not in line with the niche the business is actually marketing to.
Take the time to work out your brand and niche and once you have done so make a promise to yourself to "stay the line" - it may terrify you the first couple of times you have to say "no" to a potential customer because they do not fit your niche but the long term benefits (and profitability) to your business will far outweigh a "little scare" in the early days.
It will also free up more of your time to work on the 2,367,985 things you have to do when you first start your business - thankfully small business owners have worked out how to have 25 hour days and 8 day weeks!!!!! 8=)