It looks like a good translation to me.

I don´t want to get ahead of myself = I don´t want to leave out important details/information in what I am about to tell you

Jack:  How have you been?

Bill:  Just fine.  I met a girl, we have three kids now, and the governor may give him a pardon.  But I´m getting ahead of myself.  Let me start all over.  I met a girl in 1994, and.....