Yes, I have a boyfriend so I'm not "alone". Let it be known, though, that I was single for four years prior to that. Yes. Four. And I feel like I know myself very well because of it. I know who I am without him, and I therefore know that he makes me a better person. I'm not trying to get all mushy on you, so allow me to redirect this.
It's important to know that you can be alone and your world won't crumble. It's important to be independent. It's important to know who YOU are, what you're passionate about, and what really makes you tick. Being alone forces you to discover these things about yourself.
I am absolutely not encouraging anyone to abandon their friends or significant other. Just be sure to make time for you and you alone so that you can really tap in to your inner self. And know that it is ok to be alone.