Mormon 9:29

See that ye are not baptized unworthily; see that ye partake not of the sacrament of Christ unworthily; but see that ye do all things in worthiness, and do it in the name of Jesus Christ, the Son of the living God; and if ye do this, and endure to the end, ye will in nowise be cast out.

Proper actions are important. Proper actions for the right reasons are essential. To serve God most effectively, we must be in tune with the Holy Spirit so we can receive guidance and direction, and therefore we must be worthy. Worthy does not mean perfect, but it means that we are trying in humility, constantly repenting. To act in the name of Christ is to do what he would do the way he would do it for the reasons he would do it. That takes revelation, and revelation comes only to those who are worthy.

Helaman 5:8

And now my sons, behold I have somewhat more to desire of you, which desire is, that ye may not do these things that ye may boast, but that ye may do these things to lay up for yourselves a treasure in heaven, yea, which is eternal, and which fadeth not away; yea, that ye may have that precious gift of eternal life, which we have reason to suppose hath been given to our fathers.

Righteous acts are meaningless if done for the wrong reason. Christ warned against the pharisaic wickedness of praying, fasting, and giving alms to be seen of men. We ought not to be concerned with what men think of us but only with what the Father thinks of us. At the end of the day, it is not men but God who will exalt us.