Salvation by grace alone

What has been termed “legalism” has been a problem ever since the beginning of the church 2000 years ago.  It creeps its way into our lives if we are not careful and can wreak havoc on entire churches as well as drive people away from Christ. It offers itself as a shortcut to holiness but often leaves in its wake hurt and disillusionment.  How can we avoid the creep of legalism into our hearts and have the true change that God desires within us? Acts 15:1-11, Col 2:16-17, 23, Gal 5:16, Eph 2:8-10