However, I've come to the realisation that most of my thinking processes are vain, arrogant, hypocritical, status-seeking, petty, jealous etc etc (constantly comparing myself with the more talented meditators on here for example!

Is this true to other peoples experience? Is this why looking into the mirror of mindfulness (and seeing what your preoccupations really are) is quite hard? Is 95% of what people think really just rubbish? Or is it just me and I'm a bad person?
Lastly, and I feel I should know this by now, but is there any danger in 'suppressing' thought by noting it as it starts to arise in working/daily life?
Thanks