G-d doesn't answer the prayers of someone who makes no effort to help himself

 Bava Metzia (75b) There are three who cry out and are not answered, as they are responsible for their own troubles. And they are: One who has money and lends it not in the presence of witnesses, and one who acquires a master for himself, and one whose wife rules over him.  One who acquires a master for himself, what is it? There are those who say that it is referring to one who attributes his property to a gentile. He falsely claims that his possessions belong to a gentile in order to evade his obligations, thereby inviting the gentile to take advantage of this declaration. And there are those who say that it is referring to one who writes a document bequeathing his property as a gift to his children in his lifetime, as he becomes financially dependent on them. And there are those who say that it is referring to one who has bad fortune in this town but does not go to a different town. He is consequently responsible for his own misfortunes.