Hi and welcome,
I believe our role in life is to seek God, to love Him, then others and to learn. If each of us got a true revelation of God’s love and became as positive and considerate to others, as we would like them to be to us, just think how much better this world would be!
God’s love can help us to achieve that, by loving others as ourselves (and think about how good we like to be to ourselves!) and doing them good, even if they have wronged you (Matthew 5:38-48). Love like this can change the world, one person at a time and we can fulfil our commission to be the lights of the world (Matthew 5:14-15).