You should by now know that it’s not easy to make it in music. There’s no doubt that you’ve got to put the work in to succeed as an independent musician, and anyone not willing to do that may as well give up now. Some people spend years working hard before they start to see some sort of decent profit, some people put in that time but never get to that stage at all.
So does working hard mean you’ll end up succeeding in music? The simple answer is no, as you can see it doesn’t. What’s important however is you understand why working hard alone doesn’t mean your music career will be a success, and what you can do to increase your chances of succeeding.