The second chakra is the sacral chakra, represented by the color orange. The word sacral relates both to the back of your pelvis, as well as meaning "sacred". Looking at the front of a person, the sacral chakra would be located at around the bellybutton.
The sacral chakra governs the creative and emotion related energies. If your sacral chakra is in balance, then you find yourself on an even keel when you relate to people. You find yourself able to pursue your creative hobbies, to write, paint, sing or dance.
If your sacral chakra is out of balance, this could cause you to have roller coasters of emotions - perhaps being too obsessive about someone, or perhaps falling into deep despair over issues that really are not that bad. It could cause you to have problems feeling creative - writing that paper, thinking up new ideas to solve issues in your life.
If you need to boost your sacral chakra, try carnelian or tiger's eye. Visualise an orange flower at the sacral opening its petals. This will help you find ways to express your emotions more fully, and tap into your inner creativity.
If the problem is that your sacral chakra is too open - that your emotions are swinging wildly out of control, that you are so hyper that you do not have time to focus on any of your ideas imagine the orange flower gently closing its petals.
The Seven Chakras