Is there a customer problem you want to solve? Are you able to solve it better than somebody else? Make sure you determine whether or not there is a market for what you want to sell. Have a unique selling point to differentiate yourself from the crowd – then line up potential customers.
All over the world fear prevents people from starting up on their own. Once that hurdle is jumped, though, there is no looking back for those committed enough to see the project through and make it a success. Move beyond what is holding you back. Do your research, have a product, believe in it, then make it work.