Of course peace of mind and happiness comes also when we feel that we accomplish gradually our true goals. And there minor and major goals in life. We might say that our existence has no other goal than to exist. Or that we may have many different goals, according to the scale of relevance in our existence. But one of the most beautiful and meaningful goals in life is to develop more of our soul consciousness. So all other minor goals like social success, money, fame, knowledge , creativity etc are to serve this major goal of developing more of our soul consciousness
Here are also two relevant quotes by Dalai Lama the 14th.
"In order to develop a feeling of cosmic responsibility-cosmic dimension of every action of ours and of the equal right of everybody in happiness and liberation from unhappiness, it is necessary to develop an attitude of the mind , in which when we perceive an opportunity to act benevolently the other people , we will proceed to take advantage of it, instead of trying to serve only our narrow private interests."