What is my faith?

During the music part of the worship service I finally felt like I had some relief from the crazy hormonal pregnant crankiness. I put my all into singing to God and felt like my heart would burst with joy rather than malice and impatience. Today, Brother Todd spoke about Revelation 20. There was so much in there to talk about that he didn't get to say all he wanted to. It was great none the less though, I mean, the faith of those like Abraham, Moses, David, Ruth, and Deborah. Who am I that my faith should be any less than Abraham, Moses or David who had only faith in what was to come and I have the knowledge of what has been completed on my behalf through Christ Jesus death and resurrection. Here I have God's word in my hand (several versions for that matter). I have not just a promise for a future event but it has been done, the promise I lay my faith in happened long long ago. I ponder on that and wonder why my faith can be so weak. I am praying about how to be the best representation of Jesus to my co-workers like it's some big difficult thing and Abraham was asked to sacrifice his son, Moses had to free a nation from bondage, and David was constantly fleeing for his life from a psychotic king. I just want my co-workers to like me and thus be open to accepting that Jesus isn't bad. How hard can that be right? Right? I said right?! I am thankful that though I doubt God and His ability to use me to show others his love and gift of grace, he doesn't doubt me or leave me. He knows exactly what I am made of because well, he made me and I am pretty thankful for that.