Therapy Comparison for Happiness Outcomes

What’s Being Compared

Six evidence-based therapy modalities and how they perform on happiness/well-being outcomes — not just symptom reduction.

Comparison Matrix

Primary Target

Therapy	Treats Illness	Builds Well-Being	Both
CBT	✓ Primary	Secondary	Limited
ACT	✓	✓ (via values)	Strong
PPT	Secondary	✓ Primary	Strong
WBT	✓ (residual)	✓ Primary	Strong
MBCT	✓ (relapse)	Secondary	Moderate
CFT	✓ (shame)	Secondary	Limited

Explicit Happiness Goal

PPT: Yes — explicit goal is flourishing
WBT: Yes — targets psychological well-being dimensions
ACT: Ambiguous — pursues values-based living, not “feeling good”
CBT: No — happiness is a side effect of symptom reduction
MBCT: No — primary goal is relapse prevention
CFT: No — primary goal is reducing shame/self-criticism

Mechanism for Well-Being Improvement

CBT: Reducing negative affect → increases positive/negative ratio; behavioral activation → engagement
ACT: Psychological flexibility → values-based action → meaningful life
PPT: Direct cultivation of positive emotion, engagement, relationships, meaning, accomplishment
WBT: Identifies thoughts that interrupt well-being; builds Ryff’s six dimensions
MBCT: Metacognitive awareness → reduced rumination → enables savoring and presence
CFT: Activates soothing system → safeness and contentment

Evidence Strength for Well-Being Outcomes

CBT: Strong for depression remission; moderate for well-being beyond normal (d ≈ 0.3–0.5)
ACT: Strong for symptom reduction; moderate for well-being (d ≈ 0.3–0.5)
PPT: Moderate for well-being increase (d ≈ 0.3–0.4); moderate for depression
WBT: Strong for relapse prevention; modest for well-being increase in non-clinical
MBCT: Strong for relapse prevention; moderate for well-being
CFT: Moderate for shame reduction; limited for well-being

Best For

Therapy	Ideal Population
CBT	Moderate-severe depression/anxiety; need structured skill-building
ACT	Mixed anxiety/depression; chronic pain; high experiential avoidance; values confusion
PPT	Mild depression; “languishing” but not ill; wants to build flourishing
WBT	Residual depression after treatment; recurrent depression; relapse prevention
MBCT	Recurrent depression (3+ episodes); high rumination
CFT	High self-criticism/shame; trauma history; responds poorly to standard CBT

Durability of Gains

CBT: Good — skills learned persist; some relapse over years
ACT: Growing evidence for long-term durability
PPT: Moderate durability — requires ongoing practice to maintain
WBT: Strong — 6-year follow-up data shows sustained relapse prevention
MBCT: Strong for relapse prevention (43% reduction)
CFT: Limited long-term data

Synthesis: What Works for Whom

If the goal is happiness/well-being specifically (not just symptom relief):

First-line: PPT or ACT

PPT if specifically wanting to build positive emotions and strengths
ACT if struggling with meaning/values or caught in “happiness chasing” patterns

If also depressed/anxious: CBT or ACT first to reduce symptoms, then PPT/WBT to build well-being

If prone to relapse: WBT as an add-on — the best evidence for preventing return of depression while building well-being

If self-critical/shaming: CFT before happiness work — self-compassion may be a prerequisite

The Dual-Continua Insight (Keyes)

Mental illness and mental health are related but separate dimensions. You can:

Have no mental illness but not be flourishing (languishing)
Have a mental illness and still have elements of well-being

This means therapy should ideally address both: reducing illness AND building health. Most therapies only do the first. PPT and WBT are the exceptions that explicitly do both.

Open Questions

Can CBT be augmented with PPT exercises for better outcomes?
What’s the optimal sequence (treat first, then build; or simultaneous)?
Do different mechanisms (positive emotion vs. meaning vs. engagement) matter differently for different people?
How do therapy effects compare to non-clinical happiness interventions?