I write about various topics, ranging from landscaping to disability issues.
I'm usually up between 6 and 8 am, feed the cats at 8, brew up coffee, and cook up breakfast, then sit down at my desk to write around 9. I work on my blogs until around noon, when I fix up lunch and exercise for about half an hour or so. Then, it's back to my desk around 1 or 1:30, where I work on copy, fiction, networking or submissions, depending on the day and workload, until 7 or 8 pm.
The awesome thing about writing is that you can apply any experience to it. In freelancing, you need to be willing to fall back on personal experiences just as much as researching new, interesting topics. Blogging requires an understanding of how internet search works, and cultivating a personable, easy to read tone. You also need to learn how to be businesslike, but friendly and firm at the same time. Never give up, because dry spells are discouraging. Flexibility and creativity are key.
Here's the first step for high school students
Figure out what your passion is and write about it. Write a lot about it, and find a safe group of people with which to share your writing. The best first step is always practice.
"Writers make no money. Besides, you're dyslexic. Maybe you're smart, but is your writing really good enough for anyone to pay for it?"