Phrases like "Working Hard" and "Success" are relative. To some people, working continuous 40 hour week is working hard. To some, they don't look at the time. Pros and cons to both.
As someone who runs a business, I can tell you that I don't particularly like working on weekends that much but I do find some time (3-4 hours ) to work weekends and catch up on few things that are harder for me on weekdays. So I couldn't care less how many hours I put in. Sometimes it's an entire Saturday. It is my choice and I am doing it because I want to.
So find your balance on whatever works for you. I do however think that it is not easy to build a business just working 40 hour weeks but if you want to be an employee, that can work well.
As someone who runs a business, I can tell you that I don't particularly like working on weekends that much but I do find some time (3-4 hours ) to work weekends and catch up on few things that are harder for me on weekdays. So I couldn't care less how many hours I put in. Sometimes it's an entire Saturday. It is my choice and I am doing it because I want to.
So find your balance on whatever works for you. I do however think that it is not easy to build a business just working 40 hour weeks but if you want to be an employee, that can work well.