Everyone has to work out their own salvation by coming closer to Heavenly Father through obedience to His commandments. This is not too hard to accomplish for many have lived in close relationship with Him by worthily receiving companionship of Holy Ghost to help them live with Christ like love,humility, and obedience. And when we seek Father's help we are able to be changed whole heatedly into all the divine characteristics of Jesus Christ which is said in (2 Peter 1:5-7), "And beside this, giving all diligence, add to your faith virtue; and to virtue knowledge;
"And to knowledge temperance; and to temperance patience; and to patience godliness;
"And to godliness brotherly kindness; and to brotherly kindness charity."
The Book of Mormon tells much of falling of man in how they have lived according to their own desires rather than submitting to Heavenly Father's will.  There are also many accounts of triumph of those who have endured in faith in achieving His this divine nature and received great blessings and guidance in flesh and gained eternal favor with God in eternity.  Our every obedience to Him and goodness in ourselves will be credited to us and His greater blessings awaits us when we obey despite much affliction and persecution. Heavenly Father's rewards are great and He gives the perfect gifts beyond all our greatest imagination. Our obedience will invite His spirit to dwell within us to help us in this great work of gaining eternal happiness in our Heavenly Father's kingdom.