On a Tuesday

The lectionary text for Tuesday of Holy Week is John 12:20-36.  In this pasage, Jeus says that his soul is "troubled."  It seems he is troubled because he knows what is to come.  Yet, even though his soul is troubled, he continues to allow himself to be used by God.   The passage ends with a notation that Jesus "departed" and "hid from them." 

What "troubles" our souls?  Where do we find assurance? help? courage?  How do we allow ourselves to be used by God, even when our souls are "troubled"?