“…Optimism has been extensively researched in recent years, and has consistently been shown to influence patients' QoL, in chronic illnesss (Stanton, Revenson, & Tennen, 2007;Vilhena et al, 2014). Optimism has also been linked to better mental and physical health, in a variety of cancer locations (Allison, Guichard, & Gilain, 2000;Zenger, Brix, Borowski, Stolzenburg, & Hinz, 2009), including breast cancer (Colby & Shifren, 2013;Scheier & Carver, 1992;Schou et al, 2005), as well as a predictor of health outcomes, long-term QoL, and physical well-being (Carver et al, 2005;Carver, Smith, Petronis, & Antoni, 2006;Petersen et al, 2008;Rasmussen, Scheier, & Greenhouse, 2009).…”