Table 1

Overview of the internet-delivered ACT intervention programme

WeekSessionSummary of content
1Session 1
  • Introduction to the ACT programme and programme overview.

  • Review of treatment history and evaluate it in terms of how it has worked relative to the participant’s goals and expectations.

  • Review the interactions between thoughts, feelings and function, which often serve to make each other worse (eg, become a ‘vicious cycle’).

  • Introduce the idea that change is possible - not based on symptom reduction but on aiming to alter function.

  • Introduction to mindfulness technique.

  • Homework assignment: check in with self daily and focus on activities.

2Session 2
  • Introduction to the concept of acceptance and how one’s experience of their symptoms from their various conditions may limit participation in valued activities.

  • Explanation of values.

  • Mindfulness explanation and debrief.

  • Homework assignment: Mindfulness practice daily.

3Session 3
  • Identification and clarification of values.

  • Assessment and rating of values.

  • Discrepancy between values and current function.

  • Leave on a stream mindfulness exercise.

  • Mindfulness debrief.

  • Homework assignment: Mindfulness practice daily.

4Session 4
  • Barriers to pursuing values.

  • Overcoming barriers.

  • Swamp metaphor—exercise exploring the possibility for values-based action even with aversive experiences. Discussion on the concept of willingness and unwillingness to have discomfort.

  • Body scan mindfulness exercise.

5Session 5
  • Goal setting exercise in line with three chosen values.

  • Discussion on fluctuating levels of high and low functioning and benefits of activity pacing in order to achieve a more consistent level of activity from day to day.

  • Homework assignment: Record performance over the next week regarding carrying out specific actions and pacing of activities and practice mindfulness every day.

6Session 6
  • ‘Tricks of the mind’ exercises to raise awareness of language-based influences on function.

  • Cognitive defusion exercises—finding a place to sit metaphor, get off your butts exercise, milk exercise, passengers on a bus exercise and ‘buying’ thoughts.

  • Homework assignment: practice mindfulness and cognitive defusion techniques daily.

7Session 7
  • Planning and action.

  • Willingness and committing to action.

  • Mindful walking exercise.

  • Homework assignment: commit yourself to action.

8Session 8
  • Emphasis on commitment to actions and values even when barriers exist and future planning - this is a ‘lifelong assignment’.

  • Preparation for relapses and setbacks.

  • End of programme.

  • Recap on topics covered throughout the programme.

  • ACT, acceptance and commitment therapy.