CE is done when they have not decided your case and need more evidence.
Work history is considered relevant from their point of view as you were capable of getting employment. People with no work history due to being too sick to even get a job, or who are fired for not being able to do the job because of a mental illness are usually approved. If they view you as being capable of working, you may not get approved, and expected to manage your anger or whatever your issues are. People with schizophrenia, bipolar, that hallucinate, and are severe will be approved, but those with Depression, ADD, anxiety, etc may not as it is not seen as preventing you from getting a job(I am not saying this is not serious to you, it's just the way they rate the MI's). If you've had hospitalizations, suicide attempts with depression that will help your case.
But just being on meds and seeing a Psychiatrist may not be enough, unless your P
Doc clearly stated you are unable to work in any job and this will last more than 12 months.
So you can be hopeful, but have a plan B.