In John 10:10, Jesus states one of the reasons for His advent:
"I have come that they may have life, and that they may have it more abundantly."
We know that Jesus is talking about spiritual life here, not natural life. He was here, and walked among us in human form, so that he could teach us - more clearly than ever - how to learn truth and how to do good. If we reject truth, and prefer false doctrines that help us justify the selfish things we want to do, we're rejecting spiritual life. If we keep doing evil things because we want to and we don't care if they're really right or wrong, again, we're dying spiritually.
What the Lord really wants for us is life in abundance. If we turn to him, open our minds to His true teachings, and ask for His help in rooting out our evil loves, and implanting good loves in their place, He knows we will have spiritual life in abundance - to eternity.
This is a clear promise. It's not talking about prosperity or comfort or even safety from personal tragedies during our life on earth. Unlike us, though, the Lord can easily take the long view, and He always has the door open for us:
"A person can acquire for himself a life of faith and charity... when he approaches the Lord, who is life itself. Nor is the approach to Him blocked for anyone, since He constantly invites everyone to come to Him." (True Christian Religion 358)
It's pretty exciting. Imagine that... abundant life to eternity. It sure beats spiritual death. It's an amazingly good investment. If only giving up our evils was easier... but, it's not. It's painful. Still, if we don't defeat them, they will eventually enslave us. So... here's advice from the prophet Isaiah:
"Seek ye the LORD while he may be found, call ye upon him while he is near: Let the wicked forsake his way, and the unrighteous man his thoughts: and let him return to the LORD, and he will have mercy upon him; and to our God, for he will abundantly pardon." (Isaiah 55:6-7)
See, too, Arcana Coelestia 7494, for further reading.