Spend some time with a younger person you know. When you supply something that's missing you are supplying pieces of light to fill in and ward away darkness. That's how you can leave the world a little better, by adding a little bit of goodness by your being in it and bringing light to it. Parashat Bereshit begins with a description of the creation of the world.
Creation is described in two accounts.
The first account lists the acts of creation day by day ending with the Sabbath. The second description is more narrative and tells how Adam is created from the dust of the earth and placed by God in the Garden of Eden. Eve is created later. They are expelled from the Garden because they eat of the tree of knowledge of good and evil. Following the expulsion, Adam and Eve have two sons, Cain and Abel.