Is Assurance as Simple as “Just Believe?” (Hebrews 11:1-7; 39-40; LD 7)

When we go through this life and we struggle in our faith it is hard to know where we find our hope.  Do we find our hope in believing the promises of the Gospel or do we need to wrestle with how many fruits of faith we have to make sure we really have Christ?  If we say that we are not to wrestle with all these fruits then why such a chapter on the heroes of the faith in Hebrews 11?  What is the purpose of calling attention to their works and struggles?  What does the flow of this text tell us about assurance?