Truthfully ... there is no "secret". But here's some tips to point you in the right direction. The rest is up to you.
Focus, work hard, sell hard, market constantly, expand as fast as you can - success breeds success and it's easy to get stuck small and enjoyable rather than big and profitable.
Work with people smarter than you. Pay them well; as a rule you get more work out of fewer well paid people cuz you get better people and more motivated. Lean to trust them too. Let them do their thing while you concentrate on growth.
Most businesses fail eventually thru cash flow and insufficient capital - not profits. Be nice to your bank from day one. Make the manager a 'friend of the company'. Have other friends of the company and use their connections and knowhow mercilessly.
Success leaves clues. Follow them, but don't forget to take your brain along.
Gather people smarter then you.
Have focus.
Protect your integrity. It is the most valuable asset you have.
Stay hungry.