Paul contrasted the Spirit with the flesh, "Live by the Spirit, I say, and do not gratify the desires of the flesh" (16). He then lists works of the flesh (and points out that they are obvious): fornication, impurity, licentiousness, idolatry, sorcery, enmities, strife, jealousy, anger, quarrels, dissensions, factions, envy, drunkenness, and things like these.
Compare each of these with the command to love your neighbor as yourself.
Acting on these what Paul calls works of the flesh will harm community because they do not demonstrate or require love of anybody other than oneself.
Remember the intent of the law, to build a community that would exhibit and allow God's love to prevail. Indulging in these works of the flesh would hinder the goals of God's intention. As Paul says, "If you do things like this, you won't inherit the kingdom of God."
Don't think of this kingdom as something that we have to die to get. It's a situation that could be possible for us right here and now if only we truly were to consider God our king, if only we truly were to live the way God intended--to sum it up, to love our neighbor as ourself.
If you want to read more, look at Fruit Smoothie by Dan Dick