Contemporary literature has taken elements from Ancient Greek mythical literature. For example, appalling beasts can be found in Frankenstein and Dracula; heroes are reflected in Odysseus and Beowulf; and supernatural beings are observed in Harry Potter as well as Shakespeare's Oberon and Titania.
There are several answers but here is some: 1. Stay fit (eat well, sleep well, etc) 2. Study as much as you can (ask questions if possible) 3. Think Positive