Died with Christ in God and have been raised with Christ

Colossians 3:1-4
Rules for Holy Living.
We have been raised with Christ, set out hearts on things above. Set your minds on thing above, not on earthly things.
For you died, and your life is now hidden with Christ in God, then you also will appear with him in glory.
Why?
There may be good sense in rules, renewed in the likeness of Christ, taking on his character.
Died with Christ to all sins, been raised with Christ to all good things.
We are not belong to this world anymore, so I should set my heart on things above, sometimes we have to deal with things on the world, but set the priority to the first for the God's.
How?
Am I have died with Christ and have risen with Christ either? Now living in my heart is not me but is the Christ Jesus. Resting in Jesus has peace and faith.