internet addiction and others addictions

Addiction: The state of being involved to a habit or practice. The addiction could be expressed in two types such as substances and activities,manny people are addicted in doing exercises,shopping, working, in my case I am addicted in chatting, sometimes I spend hours chatting with friends of mine and I can not control that, at the time when I go to bed I take time to conceive the dream for being chatting.There are manny types of substances that take control of  people such as Alcohol ,Amphetamines, Benzodiazepines, Methadone, GHB, Nicotine,Cocaine , Crack , Oxycontin, etc.