No longer do I call you servants, for a servant does not know what his master is doing; but I have called you friends, for all things that I heard from My Father I have made known to you.
John 15:15 NKJV

As humbling as it sounds to call ourselves servants of God, we are no longer servants of God. Prior to Jesus sacrificing His life, He called us friends.

Once Jesus sacrificed Himself, our belief in His sacrifice for our sins allows us to be in the family of God. Galatians 4:4-7 says, but when the fullness of time had come, God sent forth his Son, born of woman, born under the law, to redeem those who were under the law, so that we might receive adoption as sons. And because you are sons, God has sent the Spirit of his Son into our hearts, crying, “Abba! Father!” So you are no longer a slave, but a son, and if a son, then an heir through God.

As we can see, we’re far from being servants. We (believers) are children of God. If Jesus doesn’t call us servants, why would I call myself a servant? Know who you are and believe you are a child of God.