Why Do I Do It?

I've just had a conversation with my housemate Jesse and I did my usual thing, which really annoys me. Quite often, when I talk to people, I end up discussing really negative topics, like my lack of success with job hunting, being called boring by friends, feeling tired all the time etc etc. If I annoy myself with this crap, I can only begin to imagine what the other person in the conversation feels like.
Apart from being a bit low last week, I have been in a good place mentally for quite a while now. Therefore I should not have to result to the constant negative commenting on my life. It is something that I have to work on. Right now, I have to try and work on my CV. I really am not sure how to change it for the better to ensure that I, at least, get a call back from a job. I've been putting it off for a while now, so I really need to try.