Know there are fun people to encounter and delight you around every corner. Stay in a general state of positive expectation. Feel good. Be excited. Say and do things to uplift people. You need not explore unhappiness in order to experience happiness. Joy is here now. Express it. Allow it to flow freely through you and notice what happens to the world around you.
Consider this: its not your job to always identify things that make you happy. The vision itself does not matter but how you feel does. Imagine what inspires you and create uplifting feelings. Allow yourself to feel impatient, disappointed or negative, and block light-heartedness, as well as seeing what is here. As you choose to love where you are and have fun wherever you go, everything hits the spot. You stop looking for what you already have.