Guest Blogger and expert travel writer Michael Shapiro reveals his success with freelance writing. Every June, Michael Shapiro marks the anniversary of leaving his full-time job at CNET in SF. It’s been 15 years with lots of highs and lows, and he’s never regretted the decision to walk away from the rigidity of full-time work and hang his virtual shingle. Here are some tips that have helped him succeed in the world of freelance writing, especially travel writing. Making a Living as a Freelance Writer It’s not just an adventure, it’s a job: Travel writing can be romantic, but recognize it’s a job — don’t start out writing grand epiphanies about your summer vacation. Focus on service (consumer or advice) pieces, such as a story on five little-known museums in New York. You don’t have to be a superb writer to be a competent reporter. By providing service pieces, you…