When you have trouble with your mortgage, it's important to start thinking about how you're going to get out of trouble as quickly as possible. The sooner you can understand the issues affecting you and what the potential solutions are, the sooner you can work toward getting what you want, which is avoiding foreclosure and getting back on good terms with your lender.
While it can take years from the time you stop paying your mortgage until until you lose your home in foreclosure, spending that time dilly dallying, lollygagging, or failing to plan is a mistake. You're eventually going to lose your house, so use the time you have to your advantage by saving money, educating yourself, and making a strategy.
This may seem like common sense, and it is, but some homeowners are so overwhelmed by the stress of potentially losing their home that they freeze up and don't do anything. Playing dead is not an effective strategy. Pretending that you didn't get the bank's notices does not make you immune to their consequences. There are productive things to do.