答案: The biggest personal change I've ever mad 
The biggest personal change I've ever made is that I have fallen in love with reading. 
 When I was a child, I didn't enjoy books at all. Later, my mother always read stories for me and bought me books. Gradually I began to love reading. While reading,I feel like talking with a wise man. Reading is also a fantastic way to pass my free time.  
Books are my friends. And they have and will benefit me a lot....