If you want to know your net worths you must subtract the debts that you owe from the resources that you have. Whether you are an individual or an organization all the people can have their net worth calculated. Since the half of the world is running on credit most of the people have their worth in negative but they do have it and it is calculable.
What are the assets?
The assets are the things that are owned by you or the company. These must have some monetary value too. The greater is the monetary value the better is your asset. The size of the asset is not measured by the physical size of it. It is rather measured by the current value of the asset in the market. If you sell your asset in the market how much money would you get in the present scenario is the measure of your asset. The assets need to be increased in order to increase you worth that you can calculate on http://net-worths.org.
What are the liabilities?
This is something that needs to be limited in order for your assets to be more effective. Liabilities are all the debts that you owe. It would also include any alimony that you are liable to pay; any kind of credits that you need to pay back. All this needs to be subtracted from your assets in order to derive your net worth.
The networths could be positive for the people and organizations that have more assets than the liabilities. The same thing could become negative if you were not able to manage your debts and have more liability than assets. This worth could even be zero for those who have equal amount of assets and liabilities. Whatever is your asset you must make sure that you limit your spending and increase your investment to increase your net worth.