http://www.firstsigns.org.uk/help/alternatives.html In the above article you Say
"We're sure you already do this, however, when the Urge is upon you, it's important to monitor what music you listen to. Listen to positive lyrics and up beat melodies. This is not the time to put Maralyn Manson, System of a Down or REM on, as great as they are, they can be melancholic. Right now, you need positivity."
this is a very stereotypical view, because to some people this can be very positive music, take me for example
i started self harming when i was 9 years old due to a drunk and violent step father, i self harmed right up until i was 18, when i finally managed to stop myself, the only thing that could hold of my Self Injury would be Music, especially music from Slipknot, if ever i felt the urge to harm myself i would play slipknot, and even today i use slipknot to vent the stress i may be feeling.
system of a down, marylin manson are also both very good bands, whereas listening to "apparent" "positive music" did nothing for me at all.
perhaps the articles should be more informative and less stereotypical