Not only is it the case that happy people are more willing to help others, but as I generally point out, helping others is the best way to help yourself, the best way to promote your own happiness. It is you, yourself, who will receive the benefit.
Destructive thoughts and emotions undermine the very causes of peace and happiness. If you think clearly about it, it makes no sense to think you’re seeking happiness, if you do nothing to restrain angry, spiteful, and malicious thoughts and emotions.
Peace in the world depends on peace within. If we have that we can approach problems in a spirit of compassion, dialogue and respect for the rights of others—always a better solution than resorting to a use of weapons and force. External disarmament depends on inner disarmament.
What is important is not so much how long you live as whether you live a meaningful life. This doesn’t mean accumulating money and fame, but being of service to your fellow human beings. It means helping others if you can, but even if you can’t do that, at least not harming them.