My best friend.
She is also:
.. a thousand other things.
She is the reason I do what I do, and why I do my best to be true to myself in all situations. I love her more than I can understand, and my biggest fears include not being a good role model for her, or letting her down when she depends on me most.
She encourages me, encourages my ideas, and she works harder to achieve her goals than I could even imagine working for anything.
Happy almost-birthday, little sister.
You will go so far.