Happiness in islam does not relate solely to the wealth or richness of someone. Islam deals more towards inner happiness and spreading happiness to other fellow muslims.
The teachings of Islam will most certainly cause you to forget your worries and will make you patient. It will move you from the sphere of discontentment to one of contentment. Here is something that one should be mindful of, Islam does not order its followers to become monks or to distance themselves from worldly pleasures; on the contrary, it requires of a believer to utilize whatever worldly possessions they have to acquire true happiness.
Whoever has a position of power should use his power to spread the religion of God and to take care of the needs of his fellow brothers and sisters.
God says: яАиWhoever intercedes for a good cause will have a share [i.e., reward] there from; and whoever intercedes for an evil cause will have a portion [i.e., burden] there from. And ever is Allah, over all things, a Keeper.яАй (4:85)
Whoever has wealth should use that wealth in the path of God and to help alleviate the problems of his fellow brothers.
God says: яАиAnd those within whose wealth is a known right for the petitioner and the deprived.яАй (70:24-5)
no-one-can-bring-happiness-except-allah The Prophet (saw) clarified what will happen with one”