In my case it was so all encompassing (drowned in the noise) that behavioral therapy just increased my paranoia and made me more unstable. At some point I decided to dig deeper and then it 'clicked' and a overwhelming torrent of emotions got released. I guess everyone's journey is different on that one. Some are more in tune with themselves and just need to establish healthy habits to get back on track, which is already hard enough. Others need to confront whatever they are suppressing with all its built up energy (mostly since childhood) and can only then - after integrating - unlock and access the healthy habits routine otherwise they will be helplessly stuck in undermining themselves.
But I agree not everyone needs to confront their demons - so to speak before trying out straightforward methods from behavioral therapy. If you are open and/or desperate enough, you will know if that is the case, is an organic process, albeit very painful.