“…Even if people who struggle with substance use mainly achieve recovery without formal SUD treatment ( Klingemann, Sobell, & Sobell, 2010 ; Price, Risk, & Spitznagel, 2001 ; Willenbring, 2010 ), SUD treatment has been considered as important in promoting lasting recovery ( Brorson, Ajo Arnevik, Rand-Hendriksen, & Duckert, 2013 ; Lauritzen & Nordfjærn, 2018 ). People who are referred to specialised inpatient SUD treatment represent a population with multiple psychosocial challenges, who often struggle to handle their everyday lives (e.g., maintaining daily routines, attending work or other meaningful obligations) ( Camilleri, Cacciola, & Jenson, 2012 ; Helsedirektoratet, 2015 ; Lopez-Goni, Fernandez-Montalvo, Arteaga, & Esarte, 2017 ; Norwegian Directorate of Health, 2015 ; Wakeman, Metlay, Chang, Herman, & Rigotti, 2017 ).…”