I have a hard heart. I don't feel any emotions. Tears do not roll out of eyes. I don't get attached to things. And due to lack of emotions i couldn't connect with Allah and Ahlulbayt emotionally. so please tell me some process through which i could soften my heart.

May Allah softens your heart. Some of the Islamic recommendations to soften ones heart are as follows:

1. Daily recitation of the holy Quran
2. Abstinence from sins
3. Visiting cemetery to pass your salam to those buried
4. Visiting sick people
5. Reaching out to those in need
6. Reading and remembering the tragedies of Ahlul bait

Allah will make it easy for you