Hopefully making theology simpler to understand! (2 Corinthians 1:12)

For we are his workmanship, created in Christ Jesus for good works, which God prepared beforehand, that we should walk in them.

Ephesians 2:10, ESV

The ultimate good work was Christ dying on the cross for our sins. We ought to sacrifice of ourselves to take that news to others, helping them get through this life (especially when considering this really may be their best life now!)