I began to learn to wait. Patient waiting does not come naturally to most of us, but a great deal is said about it in the Bible. It is an important discipline for anyone who wants to learn to trust.
I do know that waiting on God requires the willingness to bear uncertainty, to carry within oneself the unanswered question, lifting the hear to God about it whenever it intrudes upon one's thoughts.
Waiting silently is the hardest thing of all. But the things that we feel most deeply we ought to learn to be silent about, at least until we have talked them over thoroughly with God.
S. D. Gordon, in his Quiet Talks on Prayer, describes waiting. It means:
Steadfastness, that is holding on;
patience, that is holding back;
expectancy, that is holding one's self in readiness to go or do;
listening, that is holding quiet and still so as to hear.
How long, Lord, must I wait?
Never mind, child. Trust me.
~ taken from Elisabeth Elliot's book, Passion and Purity