The scale is copyrighted but you are free to use it without permission or charge by all professionals (researchers and practitioners) as long as you give credit to the authors of the scale:
Diener, E., Wirtz, D., Tov, W., Kim-Prieto, C., Choi, D., Oishi, S., & Biswas-Diener, R. (2009). New measures of well-being: Flourishing and positive and negative feelings. Social Indicators Research, 39, 247-266.
The Flourishing Scale is a brief 8-item summary measure of the respondent's self-perceived success in important areas such as relationships, self-esteem, purpose, and optimism. The scale provides a single psychological well-being score.
If you would like to know more about FS and its related research, please read the following papers, whose references are below. These papers can be found on the reprint page (at UIUC).
Diener, E., Wirtz, D., Tov, W., Kim-Prieto, C., Choi, D., Oishi, S., & Biswas-Diener, R. (2010). New measures of well-being: Flourishing and positive and negative feelings. Social Indicators Research, 39, 247-266.
Esch T, Jose G, Gimpel C, Scheidt CV, Michalsen A. Die Flourishing Scale (FS) von Diener et al. liegt jetzt in einer autorisierten deutschen Fassung (FS-D) vor: Einsatz bei einer mind-body-medizinischen Fragestellung. Forsch Komplementmed 2013; in press. doi: 10.1159/000354414
Translations of the FS into various languages are available. Feel free to translate the FS into other languages. However, we would appreciate it if you could send us a copy of the translation so we can update this list.