Your modality is not your niche
DBT, CBT, or ACT are modalities, not niches.
Some clients look for a therapist who practices a specific modality.
But most look for a therapist who can help them solve a problem.
That’s why a niche has two parts: a demographic and presenting concern.
For example, you help adolescents and young adults struggling with disordered eating feel more confident about their bodies.
Put the modalities you practice on your services page on your website, but don’t make it the majority of what you talk about.