Angriness is the child of unfulfilled wishes. Angriness brings attachment which than will be converted in any form of Lust. Lust pushes the person in the great deep of stress, restlessness, insomnia and other psychological problems. This ends at last in a failed life story.
It does’t mean we should not have wishes. They are must for success and progress. But they must be observed and controlled carefully by one’s discrimination Also do all what you can do to achieve your desires and dedicated your efforts to that supreme power. Let him care about your happiness. This is the ultimate essence of Bhagwad Gita. The Gita Saar.