This study examined the relationships among general self-efficacy, perceived social support and coping styles among internally displaced persons (IDPs) in the host community of Finote Selam, Ethiopia. Employing a mixed-research approach with a convergent parallel design, a systematic random sample of 359 quantitative respondents was integrated with 10 purposively selected qualitative key informant interviewees. Quantitative data were gathered using the general self-efficacy scale, multidimensional perceived social support, and brief- COPE scales. The quantitative data were analyzed using both descriptive and inferential (Pearson correlation, independent samples t-tests & one way ANOVA, and multiple linear regression) statistics. The qualitative data were analyzed with thematic analysis. The findings revealed moderate baseline levels of self-efficacy (M = 24.02) and perceived social support (M = 52.05), with avoidant coping emerging as the predominant strategy (M = 29.20). Self- efficacy and social support correlated positively with adaptive coping, combining to uniquely predict 50.2% of its variance ( R2 = .502, p < .001). Independent t-tests and ANOVA indicated that female IDPs (M = 30.45) and recent IDPs (M = 33.46) relied significantly more on avoidant strategies. The qualitative results revealed that persistent economic hardships drop contextual self-efficacy, while a psychological reciprocity crisis regarding informal hospitality drives defensive self-isolation. Additionally, the sudden loss of domestic roles and structural dependency severely shattered the participants' identity, inducing heavy emotional distress. Conclusively, the study demonstrates that while internal psychological resources and informal community support are vital protective factors for displaced individuals, the absence of structural economic capital and role stability ultimately forces a reliance on avoidant coping behaviors. Based on the findings, it is recommended that local disaster management structures and humanitarian partners transition from transactional aid to structured livelihood programs and gender-tailored psychosocial support to facilitate sustainable integration