The people who like the stone obsidian are the ones who need the ceaseless change in their life. They like it when something always happens around them, so in that case you chose this beautiful stone try to deal with varied things as much as possible in every area of your life. You should try to avoid monotonous activities because they can lead you to lethargy.
You only feel well in your body if you can bring some happiness into the life of others every day. Due to this not only them, but you will also be happier, so you should definitely strive for it. It is important to have fun in life, because we only have one life - at least in this form.
Check out the personality traits for the other stones as well!