CHICAGO — DeMar DeRozan knows himself. It’s a simple thing, DeRozan says, but it’s definitive as a player and a man. DeRozan grew up with a mother and father who refused to let him dull his personality or mold it after others. It’s the way he wants to raise his own children — to be able to sit calmly in who they are as human beings before and above anything else. There’s plenty to highlight in DeRozan’s career renaissance with the Chicago Bulls. At 32, he leads the NBA in total points this season with 1,547 (28.1 per game) and is averaging 37.6 over his last eight games. But knowing who you ar…