"...be filled with the [Holy] Spirit and constantly guided by Him" (Ephesians 5:18 AMP)
Once, a dear lady was very angry with another Christian sister, and as they argued, she said to her, "If I hear another word from you, I will drop this Bible and slap you in the face!" However, she wasn't holding an actual Bible. What she meant is that she'd put aside whatever caution the Bible gives to hit her.
What does that show? It lets us know that the Word wasn't in her heart yet, it was still in the Bible. When the Word is in you, you can't drop it-- it's your life. Every Christian wants to, and should live the life that's Spirit-ruled and Spirit-controlled; the life that's filled with God. That's what Christianity is: Christ alive and at work in you in such a way that you're always under the sway and regulation of the Spirit, not things like anger, wrath, or malice.
Don't be controlled by your feelings or emotions-- be Spirit-ruled! It makes no difference how angry you are, hold yourself in. It's called "egkrateia" (Greek) in 2 Peter 1:6.
"Be ye angry, and sin not..."
In other words, "manage your anger". You can be tempted to be angry, tempted to act in a way that isn't appropriate for a Christian, but if you walk in the Spirit, you won't fulfill the lusts of the flesh.
How do you walk in the Spirit? It's by walking in the Word of God, in the light of His Word. You're in Christ now, so walk in love. Be Spirit-ruled and Spirit-controlled at all times. Read our opening verse again and notice how often we should be filled with the Spirit: always! When you're filled with the Spirit, you have a Spirit-controlled life. Hallelujah!
I'm full of the Spirit. I'm patient and full of divine wisdom. I express the beauty and excellence of divinity through my words and actions every day, being continually led by the Spirit, in Jesus' Name. Amen.
Further Study: Romans 8:13; Galatians 5:25; Ephesians 4:1 NIV