Seven entrepreneurs share their lessons, strategies, and mistakes
Imagine working a full-time job while running your own business
 on  the side. Sound impossible? These seven entrepreneurs did it, and 
as a  result, built greater financial security and freedom for 
themselves.  Here are their stories, and their lessons:
1. Expand on your favorite hobby.  Sydney Owen, 27, 
was working for a public relations agency in Chicago  when she took up 
skydiving on the weekends. "Then I said to myself, 'I  want this to be a
 bigger part of my life,'" she recalls. Owen left her  agency to start 
doing the marketing for her local skydiving spot, while  also building 
her income by offering marketing consulting services to  other small 
business. She also helps recent college graduates market  themselves by 
editing their resumes.
She's  since relocated to California, which has a longer skydiving 
season than  the Midwest, and she now works full-time as an events 
coordinator for a  skydiving company while working up to 25 hours a week
 for her own  marketing business, 3Ring Media. "I love it—I can combine 
my passion for  marketing and for jumping out of airplanes," she says.
2. Start charging for what you're already doing for free.
  Douglas Lee Miller, 38, works full-time as a new media manager for  
DePaul University in Chicago. An expert in social media, Miller  
frequently got requests for help from other people. He quickly realized 
 he had to be more protective of his time, so he set up his company, The dbMill, to get compensated for his work.
Because  he'd been doing so much pro bono work, he had already earned
 a solid  reputation, which led to referrals, and he had a portfolio to 
show  potential clients. "The pro bono work was hard at first, to spend 
time  and not get financially reimbursed, but it ended up being a 
pathway to  more work," he says. That experience also made it easier for
 Miller to  estimate how long projects would take and how best to work 
with clients  and manage their expectations.
3. Do something that feels meaningful to you.  
Prakash Dheeriya, 51, professor of finance at California State  
University-Dominguez Hills, came up with the concept for his series of personal finance books for kids
  after he realized that his own children, then five and six, could  
benefit from simple explanations of financial concepts. "If something  
were to happen to me, I wouldn't have taught them any valuable life  
lessons, so I came up with these stories," he says.
Now,  his series, Finance 4 Kidz, contains 20 books that explain 
concepts  such as scarcity, opportunity cost, and risk and return in 
terms that  children can understand. "Especially nowadays, because of so
 much fraud,  concepts such as risk and reward should be taught in 
elementary  schools. Then they'll realize if something sounds too good 
to be true,"  he says. Dheeriya is currently working on new books on 
hedge funds and  finance for teens.
4. Create the community that you wish already existed. Six months after she graduated, Emily Miethner, 24, started NY Creative Interns, which includes hosting events and blogging about career tips.
  "I wanted a group that connected awesome creative professionals with  
awesome interns and entry-level people," she says. She and her partner  
soon found sponsors and built their network, all while Miethner held  
down her full-time job as a community manager for another website in New
  York City.
"We started charging [for events]  when we realized, 'This is really 
adding value to people's lives.' I  decided, 'I think I can make this 
into a real business,'" says Miethner.  She continues to plan events and
 build the blog and network while  maintaining her full-time job.
5. Leverage the skills and connections you already have.
  Megan Moynihan, 27, was working for a big public relations firm when  
she decided that she wanted to pursue a more mobile lifestyle, and build
  a career that would let her work in Wyoming during ski season and New 
 York the rest of the year. "I had taken entrepreneurship classes in  
college, but I knew I needed experience first," she says of her decision
  to first work for a firm before launching her own agency. 
While  still employed at her firm, Moynihan started taking one day 
off a week  to work for outside clients as well as pitch new ones. She 
started  meeting potential clients through friends, and now has left her
 firm to  pursue full-time self-employment.6. Get help from friends. Erica Sara, 34, was working full-time as a consultant for Coach when she started designing her own jewelry and spreading the word through friends. As a runner herself, she created "race bling," jewelry to commemorate races such as marathons or inspire the wearer to run harder. She also created "mantra jewelry," featuring inspiring words or phrases, as well as jewelry for mothers, including the popular "generation necklace," which features the names of multiple generations of family members.
"I had friends hold trunk shows," says Sara, of her early days, before she turned her creations into a full-time business. She also built up her customer base through her own running blog, as well as Facebook, Twitter, and Instagram accounts. "Being able to sell my own designs felt more gratifying and more real," she says, even though she continues to work 12-hour days (or longer).
7. Seek help online. James Mundia, 27, had been reading Ramit Sethi's blog, IWillTeachYoutobeRich.com, since he graduated from college, and decided he wanted to follow Sethi's advice and figure out a way to earn money on top of his job as an information technology coordinator for a small association in the Washington, D.C., area. So he signed up for Sethi's Earn1k.com class, which teaches people how to start earning $1,000 on the side.
Now, Mundia offers private soccer lessons for young players in the Arlington, Va., area, which has helped him pay down his credit card debt and save up for travel. The Earn1k program, Mundia says, helped him realize that he could earn extra money on the side by making use of the skills he already had. One day, Mundia hopes, his soccer-training program will become his main source of income.
