People with Kindle addictive personalities typically switch from one addiction to the next. These individuals may show impulsive behavior such as excessive caffeine consumption, Internet use, eating chocolate or other sugar-laden foods, television watching, or even running. Factors such as peer pressure, physical and sexual abuse, early exposure to drugs, stress, and parental guidance can greatly affect a person's likelihood of drug use and addiction. Development. Genetic and environmental factors interact with critical developmental stages in a person's life to affect addiction risk.