Me, Myself, & Trust

I recently discovered in the process of going through some of the questions in working the 12 Steps that I don't trust myself.  It was an interesting discovery.  I have talked here about how I don't know how to even begin to establish trust in my husband again.  And now this...how the heck do I trust myself again?  My friend, Jacy, has talked about this a lot on various occasions on her blog.  I feel that my life has been full of instances where I have made choices and second guessed myself continually.  Sometimes I was right to second-guess myself & sometimes not.  My biggest fear is confusing my trust in myself & what the Lord is telling me to do.  How do you have trust in yourself & trust in the Lord