An obligation is something that you must do because you have agreed to it before hand. There are obligation quotes about mortgages that show when you have a mortgage loan you are obligated to make the payments that you originally agreed upon. An obligation is not always enjoyable but it is a responsibility that you should not try to duck. If you are obligated to do something and you fail to do it then you have broken your word and the individual may never trust what you say again in the future. If you have children then you have an obligation to take care of them properly, providing food, shelter, clothing, and comfort while they are minors. If you do not meet these obligations then the state may step in to ensure that you children are being properly cared for.