What is a sister?

A sister is the one who makes life easier to live,
Whom you can share our likes and dislikes with,
She is the one who tells us her vast secrets and feelings
And asks us to do the same,
And has the rights to know all our friends' name.
She makes us feel comfortable when we are sad,
She guides us the right way when we are bad,
She is more than any word can tell,
She holds us when we tend to fall.
She comes to know our problems through our eyes,
She is of course naughty but wise,
She is my life's sunrise.
We should always make oneself full
of these qualities to be a sister.
And my Sister you are the most beloved to me
As you care so much for me!