The first reason why you can never be rich is too much responsibilities, carrying family problems on your head which we all know family problems are always around the corners and can't be totally eliminated. The best help to offer family is to put yourself in a better financial position, don't struggle to help family, struggle to put yourself in a better financial position then take away your from dependency. How do you take them away from dependency? If you have a company or business you are running or a connection, you can connect your family members to your friends let them work for them so that they can earn their own money or you have a business you are running, they can work for you to earn their own money. As long as their is still dependency they will continue to depend on you and demand from you.
I'm not familiar with the kind of family you're referring to, whether it's a nuclear family or an extended family. In a nuclear family, especially if you are the family head, it is your duty to support your family. If it is an extended family, I have nothing to say. It is not a good idea to keep money or invest money to get rich while putting your family through hardship. You can also invest money into your family, especially your kids, and become wealthy in future. All I know is to avoid wasting money on things that are neither necessary nor desirable.
The second reason why you can never become rich is not knowing how to use money. There are several ways money can be use : spending, savings, and investing. Many of us already know about spending and even when we spend we spend on things that are not really needed but just to impress people who don't care about you.
Buying liabilities, things that doesn't have value five years from now. Many save but even when money is saved, it is done to spend and not to invest and the only way to become rich is to invest and not by savings. So , invest in assets and not liabilities.
Yes, I agree with you that when accumulating wealth, you should refrain from spending money on items that will always be a burden to you. It will be difficult to become wealthy without that. For illustration, consider an automobile. When you try to get a car even if you don't need it because your buddies have one, it will only wind up being a responsibility for you because it will occasionally develop problems that you will have to fix. Also, because it is a depreciating asset, you sell it for less money when you decide to sell it. We should just focus on our own business and avoid competing with others while accumulating wealth.