Give up the "idea of happiness" in order to be happy.
Holding to an "idea of happiness" blocks happiness. For happiness is. If happiness strictly depends on this or that, then we are not free. The greatest discovery is that happiness is already within us; we find happiness when we uncover it.
Of course we take joy and confort in our home, family, friends, and lovely things we acquire along the way. But, that which is given to us will be eventually taken away.
There is another dimension of life; call it the absolute, which just is. The ancients called it "Atman" - the imperishable soul that is a spark of the universal Brahman (or God infinite) We are THAT as well as our relative fleeting life. Jesus may have been speaking of THAT when he talked of "Life more abundant".