The amortization chart below (courtesy of the Federal Reserve) shows how the proportion of your payment that is credited to the principal of your loan increases each year, while the proportion credited to the interest decreases each year. In the later years of your mortgage, more of your payment will be applied to principal, helping you build equity faster.
The programs vary in what they can offer. In some cases direct financial assistance may be provided to help you pay your mortgage for a short period of time. Payment plans or reduced monthly payments may be offered. However most of the government programs and non-profit organizations will help facilitate some form of loan modification to qualified homeowners. This will provide families time to get back on track by ideally lowering their monthly payment, reducing interest rates or waiving fees.