1 John 5:5 (KJV)

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v5 Who is he that overcometh the world, but he that believeth that Jesus is the Son of God?

That’s you. And you only if you believe that Jesus is the Son of God. 

Well, is there any easier way to overcome than believing that Jesus is the Son of God?

Overcoming what? Anything. All things. If you believe that Jesus is the Son of God, you overcome the world and all that is in it.

Believe!