On Prayer, For Days We're Discouraged (D&C 81)

(4) You all have to pray. Even (especially) the people with the most authority in my church, you have to pray, because that’s what opens the doorway for me to bless you. Come, counsel with me, out loud, in your head, on your knees, in public transport, when your speaking to others, when you’re talking to yourself. (5) When you learn to pray like this—and you do have to learn to do it—to hone the ability to focus yourself in on God, to draw your mind back to Him steadily, you will be so useful to the people around you. You will be part of bringing them back to God and walking them towards salvation.

(6) So be faithful. Try hard, because it’s going to be hard. Plant your feet where I’ve planted you, shoulder to shoulder with those who are hurting.

3 Therefore, verily I acknowledge him and will bless him, and also thee, inasmuch as thou art faithful in counsel, in the office which I have appointed unto you, in prayer always, vocally and in thy heart, in public and in private, also in thy ministry in proclaiming the gospel in the bland of the living, and among thy brethren.

4 And in doing these things thou wilt do the greatest good unto thy fellow beings, and wilt promote the glory of him who is your Lord.

5 Wherefore, be faithful; stand in the office which I have appointed unto you; succor the weak, lift up the hands which hang down, and strengthen the feeble knees.