I've been doing CBT for over a year now (mainly working on the low self esteem model and targeted work on bipolar). Although I do find it helpful in some respects, I think it's had very modest results compared to medication so far. Perhaps it will take more time for me to see a more positive outcome.
I have a really nice, understanding and experienced therapist- and as people have said, this is key. It's certainly been a great benefit to have a safe and non judgemental place in which to examine my worries and deal with them constructively. Previously, I would tend to offload my problems excessively onto my mum or sister, they'd inevitably get frustrated with my negative outlook and in turn I'd get annoyed with their inability to understand my perspective and bipolar-related problems. Clearly, that strategy wasn't working!

So, CBT has given me alternative ways of dealing with what they term 'anxious, negative predictions', which make up the bulk of my distressing thoughts.
However, the issue I have with CBT is, although I'm generally able to generate alternative/balanced perspectives in response to my negative thoughts, I have trouble actually believing them! This has been a consistent problem... When presented with the 'evidence', I'm just not sold because it doesn't match how I feel, and my 'emotional reasoning' has the stronger pull. When I've told my therapist and p-doc this, they just say it needs more practice.
Also, my family isn't convinced it's helping at all, which is quite discouraging. When I told my therapist this, she said I'm the most engaged client she has and couldn't really understand their viewpoint.
I'd really love to be able to change my thinking, as my chronic negativity and perfectionism definitely contribute to my self-criticism and me putting a great deal of pressure on myself. Despite being on medication, the stress of this thinking has triggered most of my episodes in the past, so it's something I'm desperate to alter.
I just feel stuck at the point at which I can recognise what's wrong with my thought patterns, but am having difficulty changing them.
It's good to get other people's input on the topic in general. If anyone has any thoughts on CBT specifically, I'd be really interested to hear them... Thanks guys x