Although it may be possible for some people to file a bankruptcy case without an attorney, it is not a step to be taken lightly. The process is difficult and you may lose property or other rights if you do not know the law. It takes patience and careful preparation. Chapter 7 (straight bankruptcy) cases are somewhat easier. Very few people have been able to successfully file chapter 13 (reorganization) cases on their own.
Remember: The law often changes. Each case is different. This post is meant to give you general information and not to give you specific legal advice.