“…Conversely, a fatalistic attitude and low personal agency could be related to perceived inabilities to deal with life's hardships (Bolam, Hodgetts, Chamberlain, Murphy, & Gleeson, 2003) or even to levels of desperation among persons who use drugs (Meylakhs, Friedman, Mateu-Gelabert, Sandoval, & Meylakhs, 2015). Considering these perspectives, prevention programmes should focus on tailoring agency-based strategies to foster safer crack use practices (Wechsberg et al, 2004), since it has been demonstrated that persons who use drugs are concerned with taking care of their health and of themselves (Drumm et al, 2003;Duterte al., 2001;Gowan et al, 2012). One recognized method is peer involvement in harm reduction programmes (Marshall, Dechman, Minichiello, Alcock, & Harris, 2015;Mateu-Gelabert, al., 2014;Weeks et al, 2009) that train drug users as advocates.…”