Aims: This study examined the efficacy of 2 novel interventions on psychological and physical well-being over time.  The beneficial effects of brief, home-based gratitude and mindfulness interventions on general wellbeing have been examined previously, however a longitudinal analytical approach is rarely utilised.  This study examines the efficacy over time of two novel interventions.

Methods: Sixty-two participants were randomised to a one of 2 gratitude interventions, one of 2 mindfulness interventions or a wait-list condition. Interventions were completed 4 times a week for 3 weeks. Participants completed self-report measures of gratitude, mindfulness and well-being at baseline, at 3 weeks and at 1 month.

Results: The strongest effects were observed for positive aspects of well-being. Order effects within interventions were evident; completing listening exercises or writing exercises demonstrated differing effects across variables across time. Baseline life satisfaction and the order of activities within interventions influenced participant adherence to protocol.

Conclusions: These findings indicate the order in which intervention components are administered can influence participant outcomes and retention. The findings indicate that order effects and baseline well-being levels can influence likelihood of participant attrition. The efficacy of interventions will be discussed with reference to current models of positive wellbeing, ceiling effects and with particular attention to the importance of a longitudinal approach to wellbeing interventions.