One of my favorite passage taken from Gerald N. Lund’s talk.
The heart is a tender place. It is sensitive to many influences, both positive and negative. It can be hurt by others. It can be deadened by sin. It can be softened by love. Early in our lives, we learn to guard our hearts. It is like we erect a fence around our hearts with a gate in it. No one can enter that gate unless we allow him or her to.
In some cases the fence we erect around our hearts could be likened to a small picket fence with a Welcome sign on the gate. Other hearts have been so hurt or so deadened by sin that they have an eight-foot (2.5-m) chain-link fence topped with razor wire around them. The gate is padlocked and has a large No Trespassing sign on it.Gerald N. Lund
So how can we open our hearts?