Being saved by grace is not license to live a lawless life. Jesus said that, He did not come to destroy the law but to fulfill it.
The rebel will always be constrained by the letter of the law which kills. The yielded, obedient believer wants to follow the law of love and is therefore free in keeping it.
Following Jesus is not a “have to” it is a “want to” way of life filled with righteousness, peace, and joy in the Holy Ghost.
Nothing could be better.