Three options for starting a business:
1) Solve a problem better than others (execution risk)
2) Solve a problem no one knew existed (product-market risk)
3) Solve a problem everyone knows about but is hard to solve (technical risk)
Surest money
Earning is an important part of life. But more important than that is the proper use and saving of the money you earn.
Where do you want to invest your earned money ?