how to do successful startup ?

Solve a problem you are passionate about. The first step in starting a business, while challenging, is arguably the easiest. ...
Find validation. ...
Decide on ho your business. ...
Create relationships with your customers. ...
Be flexible. ...
Don't get comfortable. ...
Always play an active role. ...
Be patient.

Learn more here
https://googleweblight.com/i?u=https://articles.bplans.com/be-the-25-percent-25-tips-to-make-your-startup-a-success/&hl=en-IN