how can i develop empathy?

Understand why you want to suppress your emotions. Another thing to remember is that there is always a time and a place to feel cetain emotions. Now if you do suppress your emotions, eventually you will not be able to suppress much longer and you will end up imploding emotionally. But in my own opinion, you may not want to develop empathy. The reason being is that someone without empathy is not plagued by unruly emotion, but is capable of using logic and cunning. Not only that, but you are free from such feeling that you can assert yourself over those weaker than you.

But its your decision.