For me stable means... opposite to "I want to die. No, I am gonna move to Pristina and live on street named after Bill Clinton and bring peace to the little country. Oh, no, I wanna die. world sucks... no, actually I want to live! Shoes! I need them! Life is wonderful....".

Stability of thoughts and worldview. Being able to live in the now, not dreaming of ICBM hitting the town or about buying ticket to "any place but here". Not sure where it is. I am able to live that everyday life and I don't give in to my thoughts, but is it stable? I don't think so....