Real happiness is unconditional, and is achieved by releasing our suffering. Even though things are rarely how we would like them to be - within, or in our personal lives, or in the greater world - we have the potential to let go of our resistance, grief, or anger, and feel more relaxed, at ease, grateful, and enthusiastic. In this sense, working towards real happiness is far from selfish; it makes us much more able to respond compassionately and skillfully, and therefore it benefits others.
