There is no way to guarantee being successful when you launch a new venture. But there are things that you can do which make success a much more likely outcome as the fruit of your labours.
The biggest, single thing you should consider doing when launching your first new company is to play to your strengths. You should make sure that you choose a business or sphere that you know inside out, then get other people to help out with the other areas that are not covered by your genuine talents.