The world fights for peace. Which, if you think about it, is a little like screaming for quiet or demanding flexibility. It's never worked yet, at least not for the long-term. But peace is absolutely achievable. What the world in general doesn't understand is that it needs to be achieved one person at a time.
There are two basic types of peace: inner peace and (for lack of a better term) outer peace. If each person were to work hard to develop both of these qualities, war and disharmony would disappear. Here are some specifics:
So why hasn't it happened yet?
Unfortunately, despite the huge volume of information out there - from The Bible to Brian Tracy - instructing people about finding and maintaining inner peace, the general way of the world pushes other priorities: money, fame, power, influence, etc. All of these things require one to push, to struggle, to constantly be dissatisfied, to not be content with what they have. Inner peace is impossible in that environment. And in many cases, people with these faulty priorities view feelings of inner peace, (or those who display outer peace) as weak, naive, incompetent and inferior.
So, outer peace stays out of reach for a large portion of the world. Nations will never achieve it because each nation has ingrained its populace with the attitude that theirs is the best place to be, to live, to work, and all others are inferior.
But individuals can achieve both inner and outer peace by being willing to swim against the current: focus on what is good in your life, focus on the good that others are doing, cultivate humility and modesty, remove negative and argumentative thinking before it has a chance to come out of your mouth. And begin realizing that life is not all about getting what's yours, but it's about enjoying what you already have: family, friends, health. Savor each good moment you have and add it to the stockpile of memories you've collected.
If you do, you'll likely find what peaceful people all throughout history have found: peace is contagious. Just maybe, yours will catch on.