I Don't Know What I Want

Sometimes I try and step back and figure out what the heck I want. There is the 90% of the time that I want someone I can pour every ounce of energy, love, and attention into. Then there is the other 10% that I want to be alone. Not talk to anyone, not see anyone, just completely alone. How can I want to be with someone... anyone so bad, yet want to be alone at the same time