Purpose: This pre-pilot randomized controlled trial (RCT) assessed a mindfulness-based intervention (MBI, “REMIND1.0”) during the COVID-19 pandemic. Methods: Twenty mental health service users were allocated to either 8 weekly mixed-mode MBI ( n = 10) or treatment-as-usual (TAU) ( n = 10). Results: There were significant interactions between group and time (baseline T0, post-intervention T1, and 1-month follow-up T2) across all quantitative outcomes (personal recovery, trait mindfulness, self-compassion, resilience, moods, quality of life, and general health). The main themes that emerged from qualitative interviews at T1 are previous experience with MBIs, features of current MBI, and benefits of personal recovery and at T2 are recollection of MBI content, maintaining regular practice after MBI, and retained benefits of personal recovery. Conclusions: The current MBI is acceptable, feasible, and potentially effective in facilitating personal recovery.