The aim of this study is to investigate the effects of emotion strengthening as a training programme for optimism for nurses. The experimental and control group of this research was totally composed of 20 nurses. A pre-test post-test research model with control group was used in this research. Nurses' optimistm levels have been measured by "Optimistic Scale" which was developed by Balci and Yilmaz (2002). In order to test that, meaningful differences between the scores of pre-test and post-test within both control and experimental group Mann Whitey U and Wilcoxon Signed Rank test were applied for statistical analysis. It was found that this emotional strengthening training had positive effects on levels of optimistm for nurses. The findings have been discussed in the light of literature, and some suggestions have been made.