six packs abs - i need to workout

I was so fat before 2 years. When I heard about the word six packs, I thought I need to bring them. But first I need to reduce my fat. I went for gym and reduced my weight from 92 kilos to 70 kilos in 3 months. It was very difficult for me to reduce my fat. Now I am fit and have great stamina since I used to run continuously or an hour daily. Now I am trying to get six packs and building my body too. Many said that I can't bring six packs; I am going to break their noses after I bring them.