Please go through below mentioned link you will find nice ways and A’maal for increasing one’s sustenance.
http://www.duas.org/wayincrrizq.htm
tradition states that a person came to Imam Ja'far-e-Sadiq (a.s.) and asked for a prayer which will increase his income or daily bread. He was asked by the Imam (a.s.) to cut his moustache and nails on a Friday.