A sample of 24 voluntary participants in a federally funded vocational training and placement program for homeless people in El Paso, Texas, was studied to identify specific interventions that increase self-sufficient behaviors of homeless individuals. Case study data were collected from orientation discussions, career counseling sessions, and ongoing case management interviews. Supplemental information was gathered through academic and vocational standardized tests and questionnaires based on Ajzen's theory of planned behavior, which addresses the relationships among beliefs, attitudes, intentions, and behavior. The sample members had positive attitudes toward self-sufficient behaviors and positive behavioral beliefs about the outcomes of self-sufficient behaviors. Their perceived behavioral control over systemic barriers was realistic. Some factors (employment and housing) influenced sample members' behavior rather than intention. Other external barriers (transportation and child care) were overcome by use of integral program services. Sample members fared poorly in internal resources such as skills, planning capabilities, and knowledge. The lack of significant referents, which had the biggest effect on participants' intention to perform self-sufficient behaviors, was addressed through the following intervention tactics: career counseling, case management, and peer support. (Contains 71 references.) (MN)