Drugs are chemicals that disrupts the brain the nerve cell function. Addiction is all about getting accustomed to a particular habit which itself is a complex disease and inorder to quitting this habit depends upon an individuals strong will power. Drug abuse is all about dependence ona legal or illegal drug or medication.Few legal stubtances like alcohol and nicotine are also considered as drugs.This abuse disbalances the mindset of an individual by changing the structure and function of the brain.This habit or addiction has a great impact on brain.In order to presume a better life people must stop abusing drug.When an individual gets accustomed then he loses self-control and becomes unable to take any sound decisions