There are many things that one should take care of in life, but none will be more important than caring for the heart. In the physical aspect "because of it flows life", according to the proverb of today. There are people who die of the brain, but they will remain alive if the heart still beats. In the spiritual context, it depends on the kind of life that we will eventually lead.Reason why we should have a right heart before God.
Thanks for sharing @xiore.