In this quote President Lorenzo Snow speaks on how understanding our gospel convenants and being true to them can overcome any disappointment or doubt and help us realize all the Father has,

“Where is there cause to mourn? Where is there cause for the Saints to wear long faces? Where is there cause for weeping or repining? There is none; but it is life or death that is set before us; principalities and powers are ours if we continue faithful; sorrow and banishment if we disregard the gospel.

“What can we wish for more than is comprehended in our religion? If we will stand firm upon the rock and will follow the Spirit that has been placed in our bosoms, we shall act right in the way of our duties, we shall act right to those who are placed over us, we shall act right whether in the light or in the dark.”

Lorenzo Snow
Teachings of the Presidents of the Church
Chapter 5: The Grand Destiny of the Faithful