I have an informal background in learning and cognitive psychology and a decade in volunteer crisis support and mental rehabilitation back into a modified normal life.

The pointlessness of online, self-motivated, CBT has been a constant source of anger and frustration in mental health communities for years. Granted I most likely only see the people these tools fail for and are then further down the track so I can't claim of any knowledge on what % of people CBT or DBT works.

I wish you well of course, but mental health is not an area that 'scales' well in this way. Self-motivation and reflection are usually the first tools to fall away when someone is in need of mental health support. I think too much emphasis is placed on replicating academic 'truths' in the absence of the actual issues people face.