Well, the last time I actually figured out how long it takes me to make a complete quilt (from cutting to sewing to quilting by hand to binding), it was about 785 hours for a queen quilt. But I work full time, have a cake decorating business in the evenings/weekends (weddings, you know), and kids involved in plenty of activities (spring musical, solo & ensemble - instrumental and voice, etc., etc., etc.), not to mention 2 little grandsons my husband and I love to dote on. So sometimes I can get a big quilt done in a couple of months, and other times, it takes a lot longer (like my parents' anniversary quilt that I started about 28 years ago and it still is not finished!).
You've just got to plug away at it, and keep going. I enjoy hand quilting at nite when I'm watching TV. Just wish I had a floor frame to work on instead of my little q-snap that fits in my lap.