are you critical?

[leftyjew]

So I've been thinking about what makes people seem more or less (mentally/emotionally/psychologically) healthy. I think I've come to the realization that in general, being more critical makes you less healthy, and appreciating the awesomeness of things makes you more healthy. That is, positive thoughts and focussing on the good things makes you more stable than negative thoughts and focussing on the bad. So what does that mean as far as my life goes? I'm generally a critical person, so if I completely turn off being critical, that would be rough. However, I can do the Zen thing and just note critical thoughts when they enter my mind and be aware of them, thereby abating their influence on my mental health. What do you think makes people (mentally/emotionally/psychologically) healthy or unhealthy?