Mittal has completed his Master of Arts(English & urdu) from Punjab University. In 1962 he began Manufacturing wheat threshers with the help of local blacksmiths in Hoshiarpur, Punjab. The following year the family goes bankrupt and by 1970 his net worth was Rs 1 lakh. He tells "Once I applied for dealership of Maruti Udyog but was rejected. Today, I give out dealerships".