"My name",want to know your idea

Why do I call myself Anna?as you know,Anna is one of the most popular names in the world,it's not attractive,even it sounds somewhat weary,so why should i call myself such a name? Of course,I have choice to choose my English name,I absolutely can give myself an original,attractive name.I chose this name because of a woman,which is written in Luke 2:36,and verse 37 said, "She never left the temple but worshiped night and day, fasting and praying." I am drawed by her character,I wish I could be like her:never left the temple but worship night and day, fasting and praying.In fact,I am weak,lazy and not faithful now,but I hope oneday I could be changed by God's grace,and become one like her.
However,I was swayed between the names "Rebekah" and "Anna"(and I am swaying now), I also told some people that my English name is Rebekah,in my heart ,Rebekah is a name signifies a girl of pure heart,when I read her first meeting with Issac's servant,I was so appreciate her kindness and passion,then I told my friend that I have chosen Rebekah as my name,and she said it fits me.but,my heart is alway drawing by Anna's character,so I named myself Anna here.
What do you think?Anna or Rebekah?Could you give me your idea please?