The best advice I can give anyone who has started – or is thinking about starting – a personal blog is to write about what you love. When you write about what you are passionate about, it will show through in your writing. The entire process of writing will be more enjoyable as well when you are writing about the things you are passionate about; it will not feel like a chore and you will rarely run out of topics.
If you have no passion for what you are writing about, why are you writing at all? Your entries will come across as boring or flat and you will not gain the readership your writing skills deserve. When you write about what you love, it is a lot easier to sound like an expert in your field.
If you are not sure what you are passionate about, take the time to figure it out. You owe it to yourself, and your potential readers, to know and write about what makes you get out of bed in the morning. If your goal is to make money with a blog, write about what you love and the money will follow… You will have more readers and will write better posts. Great content brings traffic/conversions and when you write about something you love it is difficult to write poorly.
SIGN UP FOR EXCLUSIVE WEEKLY CONTENT 
You are so right, Passion is the key. What’s often missed is that some of the most passionate people are your employees. There is a trend in Corporate Blogging to focus on the Top-down approach of CEO or even creating a Chief Blogging Officer.
Generally you have to think: you hire smart people, people who like their jobs, care about the customer and the product or service and think they do important work. Let them Blog.
There was a great article in the Dallas Morning News last week. Here is my favorite paragraph:
“It’s clear that when it comes to traditional authority figures – whether they’re chief executives or heads of state – people trust them less,” says Mr. Edelman. “Employees are the new credible source of information. We have data that shows an employee blog is five times more credible than a CEO blog – and I say this as a CEO blogger.”
If an employee is worthy of a business card, give them a blog 🙂
To see the whole post go to http://blogging.compendiumblog.com/blog/blogs-and-business/0/0/people-dont-trust-ceos-they-trust-employees
Best,
Chris Baggott
CEO/Co-founder
Compendium Blogware
www.compendiumblogware.com