I have been working on my niece, Olivia's, baby quilt since BEFORE she was born and I almost have it finished. Maybe for her 1st birthday in July. I have taken it apart and put it back together several times. Did I mention it was tumbling blocks and my second quilt and I finished 6 baby doll quilts before I started up again? My younger sister, her Momma, teases that maybe Olivia will get it by the time she graduates from college. My older sister even told me she would do the actual quilting it if I would get the front and back done, since it is two sided (a bit ambitious, but I know it will be enjoyed for years to come since there are 4 quilters in the family and everyone wants one from any of us - LOL). I love my Momma and sisters!
All I can say is enjoy the process, set it down when it frustrates you and go back when you're in a better frame of mind, and ALWAYS buy more fabric...