This famous saying is: A book you love is a friend and a place you can go to anytime you want. From Du Fu. In a sense, it's your own thing, because no two people in the world will read the same book in the same way.
Similar sentences:
A book you love is an old friend and a cup of intriguing coffee.
A book you love is a teacher and a spaceship that spans time and space.
A book you love is a golden key and a light that guides you forward.
A book you love is a beacon and a golden key that opens the door to wisdom.
A book you love is a good teacher and a source of knowledge.
A book you like is a piece of music you like, and it is also a cup of refreshing green tea.
A book you love is a magic pen and a colorful castle.