How can get rid of anger and quarrels

I don’t know why nowadays I do quarrel with my twin sister,I feel like something is off..we don’t use to be in this kind of situation where our energies grow bitter towards each other leading to anger and a lot of evils..help me because I don’t like us being in quarrel .how can i avoid this

I was reading in 1 Corinthians the other day how these church people were taking each other to court over disputes among them. Paul was calling them out on this and the full story is in chapter 6. In verse 7 Paul says this:

"The very fact that you have lawsuits among you means you have been completely defeated already. Why not rather be wronged? Why not rather be cheated?"

The truth is, nobody can make me feel a certain way. It’s my choice on how I’m going to respond. That is not an easy truth to live with because we certainly want to blame someone else. Paul’s presenting here the option of being wronged or cheated. Most of us don’t even consider that an option. We’re right fighters. We protect our pride, but Jesus taught a different way.

When we’re feeling hurt or angry or insulted, its good to ask ourselves why we’ve responded that way. It tells us something about ourselves that maybe we need to deal with. It takes two to argue and battle. That’s not something we have to do. We can choose differently. We can be wronged or cheated, and let it lie. Ultimately we look to the Lord for help and strength and our goal is to please Him. Even when there seems to be a cost to ourselves.
Something to consider. God bless you.

Anger and frustration usually arise from a conflict between expectations and reality. If we can have more realistic expectations, we can be less surprised by reality. With siblings one can mistakenly assume mal-intent when there is none.