What do you think the will the Father not done in Matthew 7:22 to be? Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
The will of the Father is to be in a relationship with Him, through Jesus Christ. When that happens, you are expected to walk in the works He prepared beforehand for you to do (Ephesians). That is why Jesus told them “depart from Me, I never knew you”. Whatever they did, didn’t matter because the relationship wasn’t there.
The “works” will vary with each person, but proclaiming Christ, giving a testimony of His grace toward you and how it changed your life would be the foundation, imo. As Peter stated, be prepared to give an answer for the hope you have. That is a testimony. Very few, imo, actually have ever thought of what their testimony is, how God has changed their lives.
All works outside of the will of God, according to Paul, no matter how “good” they seem from a secular point of view, are “filthy rags” in God’s sight.
Peace to you