Am I sinful for being unable to control my anger and outbursts towards my husband and children, even though I know that is impermissible, and what should I do about it?

Anger gathers all evil. Its cure lies in avoiding its causes. The husband and children are more deserving of good treatment and patience. When angry, one should seek refuge with Allah from the accursed Satan, change one's posture from sitting to standing or vice-versa, and perform ablution (wudu). Suppressing anger is a characteristic of the righteous. The strong Muslim is he who controls himself in anger.