4. Drug Addiction
It is really hard to deal with the world around you when you are a drug addict without the proper care and support. There are many reasons why people start doing drugs, some are simply curious, while some try to run away from depression or anything else that bothers them, not realizing that it is not the solution. The worst thing is developing the high tolerance to any kind of drugs, which can turn out into a deep depression and eventually lead to suicide.

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