ANSWER: "By how big a fight you put up when it's challenged or been taken from you."
Many of the things we fight over are likely idols in our lives. We get angry when something we adore is challenged, taken from us or when we fear that it might be taken from us.
Matthew 4:10 ESV Then Jesus said to him, “Be gone, Satan! For it is written, “‘You shall worship the Lord your God and him only shall you serve.’”
Ephesians 5:5 ESV For you may be sure of this, that everyone who is sexually immoral or impure, or who is covetous (that is, an idolater), has no inheritance in the kingdom of Christ and God.
1 John 5:21 ESV Little children, keep yourselves from idols.