Growing up in the housing projects of Detroit, I can tell what worked for me. This would include many others from this time period and environment.
First of all there has to be an expectation, a mindset that says, nobody owes me anything. There has to be a sense of self worth and a sense of self responsibility. One must view education, as a personal challenge and with a an understanding that it will give me nothing, if I put nothing into it. There must be value for tomorrow and that value is based on what I do today. If I have no value for today, tomorrow, which will come, will have less value.
The family unit is critical and, too, must foster the idea of personal strength of character, integrity and individuality, not a pack mentality, that views others,as competing packs. A mentality that identifies the worth of an individual by a pack serves only to destroy the individual.
Perhaps, it would be better to provide for, to feed regularly, to fence properly, to condone tantrums, and to entitle those life rewards that have not been earned.