Organize bank and brokerage statements and record their value. List your liabilities such as mortgage, car loans or credit card debt. Subtract your liabilities from your assets and you will have a good estimate of net worth. It is good to review the plan when there is a lifestyle change such as marriage, birth, death or divorce. Any change in financial position should be evaluated as well.
Many people have an annual update that reviews how the plan is being implemented.
The review also considers changing goals and circumstances. Create a budget. Determine what you actually spend each month. It is easy to keep track of large expenses such as mortgage and car payments. The variable items such as food, clothing and entertainment are often what get away from us.