Livelihood-building programs combine training and assets for rural households with the least means to build a sustainable and independent income. Since 2018, we have been evaluating such a program in Samburu, Kenya among women in pastoralist communities who face a regular threat of severe drought. Our analysis of midline data found that the program yielded substantial economic benefits for women directly enrolled as well as their non-enrolled neighbors. We also found that mental health and program saturation significantly affected those benefits. These results provide guidance for optimal program design to generate the greatest benefits.