The Dalai Lama Endorses Extroverted Pessimism

The Dalai Lama endorses extroverted pessimism, and I have his tweet to prove it.

DalaiLama: If we change inside and disarm ourselves by dealing constructively with negative thoughts and emotions, we can literally change the world.

Can the man make it any clearer? When your glass is half empty, find another half-empty glass to fill the first one back up with. I shall change the world!