What does it mean to take upon myself the name of Jesus Christ?
When we are baptized, we covenant to take upon ourselves the name of Jesus Christ. We renew this covenant when we partake of the sacrament (see D&C 20:77). We fulfill this covenant by putting the Lord first in our lives, by striving to think and act as He would, and by standing “as witnesses of God at all times and in all things, and in all places” (Mosiah 18:9).
Link to Lesson on LDS.ORG:https://www.lds.org/youth/learn/yw/ordinances-covenants/myself?lang=eng