Fate in the Quran is mentioned in a number of different ways with Allah telling us that He has decided our path and also with Him telling us that we are to strive to go towards His path and until we ourselves do not make an effort to change our circumstances Allah will not change them for us.
Allah has asked us in numerous places to show forgiveness to the people who do us wrong. Allah has asked us not to take things to heart and forgive soon for not only will it end animosity but it will also give you yourself peace of mind and make you live with love and harmony.
With Allah telling us how to lead our lives in the Quran in such minute detail one important aspect of living our lives is in keeping promises. Promises that Allah’s creation makes with other creations. Allah, too, makes promises but Allah’s promises in the Quran are extremely different from the promises that we make as Muslims to each other. Allah’s promises never break!