If you are a first gen entrepreneur, then 3 years min is gone. Untill your company reaches critical mass, you have to think, eat and sleep your business.
Why I say 3 years?. Is because coming froma salaried environment, our thinking/ thought process is different. It's takes time to think and act like a businessman. And usually it takes at least 2 years to setup a sustainable business. Meaning the profits earned from the business should cover your living expenses, give confidence for some extra investment for expansion.
A first gen entrepreneur cannot become successful without family support.