I'm sure that there would be tons of people replying this thread saying that "You know you've invested in the right business if you're making good amount of money." Well, they're not wrong. But in real life, business is not all about money. You know that you've invested in the right business if you feel comfortable with it and you get this feeling of excitement and joy whenever you think of your investment.

I don't know what business you did invest on since you didn't mention anything about it but most businesses also require good relations to other business of the same field. So, you might not be earning that much at the start but when you finally have built relationships to certain people and customers, your business would surely start earning good amount of money.

You don't maintain only your business but you also have to maintain your relationship to the people behind all that success. You have to maintain your relationship with the people that helped you build it up. Because if you don't, then it would be really hard for you to pick up when you started losing money.