As for the TEN COMMANDMENTS we surely strive to do our best, but if we fail in one point we have sinned -
However, Jesus as seen in Matthew 5 fulfilled the Law in totality and He, knowing that man in our fallen condition could not ever keep these of our own accord, came and brought us a better covenant and although the Law was good then, the Law could not save us and therefore we needed more, we needed Jesus.
When we look at John 3:16, John 10:9, John 14:6, Romans 10:9-13 and many other Scriptures we see that Jesus came for us, He gave up Heaven for us, He became as one of us so that we may be like Him.
Daily our faith in His finished work on the cross is what keeps us saved and as well we must pray, believe and strive to be Like Him , as much as possible. Our old habits disappear, lies, immorality, alcohol, drugs, foul mouths and more. Sometimes it takes a while, but none the less - as we draw closer to the Lord - all these things will fade and we will want to be more like Him.
In order to Love our neighbor as our self, we must first be in Love with Jesus and emulate Him as best we can by living a godly life and daily searching the scriptures, praying and asking that the Holy Spirit be allowed to help us and teach and lead us.
Then we can Love our enemies, and bless those that curse us... we do not become buddies with them unless they really get saved, but we can and must ask the Lord to bless them, heal and help them..... if they show no signs of turning there are some cases where we do not pray for them at all, but we yet love them as Jesus has loved us.