Anger can make us do thing we never intended doing. When we are angry we should always try to comport ourselves and we should try to be slow to action, so not to do what would make God not happy with us.

Numbers 20:11 And Moses lifted up his hand, and with his rod he smote the rock twice: and the water came out abundantly, and the congregation drank, and their beasts also.

Moses was supposed to smite the rock once but because of anger he did twice and for that he got a punishment from God.
He didn't enter the promise land.
So please whatever we do let us always be slow to actions when we are angry so we wont hinder ourselves from God's blessings.