Drawing on Sara Ahmed’s figure of the feminist killjoy, this chapter examines the urgencies and challenges of killjoy work within clinical practice. Through understanding killjoy work as the work of imagining and enacting an otherwise, killjoy clinicians make room for alternative possibilities of therapeutic care that creatively disrupt the legacies of harm and dehumanisation that continue to haunt the psy-disciplines, generating new ethical possibilities of a feminist therapeutic practice. It considers how the clinical killjoy is enriched and sustained through collective practices and solidarity work. Drawing on the ongoing praxis of a monthly Feminist Therapy Supervision Group, the chapter will reflect upon the ways this group has engaged with cultivating a collective ethics of resistance where solidarity work creates possibilities for joy amidst the ongoing work of being a clinical killjoy, bridging activism and therapeutic practice. This practice becomes part of the clinician’s Killjoy Survival Kit, constantly in assemblage and always being added to, in service of building a sustainable, yet joyful, clinical killjoy praxis that works towards emancipation, not maintaining the status quo.