English Speech on My Ideal career

This is my first English speech, so I am very nervous.

I think my ideal career is to be boss of secondhand books store.
There are various kinds of careers in the world, such as writer, nurse, teacher and doctor. But different people choose different jobs as their ideal careers. This is because everyone has his own interest and aspiration. Interest gives one person power to do a hard work. Then he can learn something which was not touched in common life. Aspiration makes one person enjoy the success of finishing a work. Therefore, one person’s ideal career concerns his interest or inspiration.
My interest is reading books. The range of books I read is wide. The books about history、philosophy、science、design or fiction I am all interested of. The range is so wide, so the books related are so much. When I am in library, I always feel disturbed and happy, because the choices are so much.
Some books which are needed or worthy of reading many times I often want to buy. However, I feel the original price of book is so expensive; especially I wanted to buy many books at one time. So I like the secondhand books stores, I can use a half of the original price to buy books. To buy books in the secondhand books store is like treasure-seeking, and never knowing the books I want will appear or not. It is joy to some books I never heard but have interest in it or the book is not appearance.
Because I like to read books, my ideal career is to be a boss of a secondhand book store.