8 rows forward, 8 rows back

I should really learn from my mistakes and not knit when 1) I have had 2 glasses of wine and 2) it is after 10pm. Last night I finished the first arm on Lara and started increases for the body. "cast on 10 stitches at the beginning of the next 8 rows"- I finish my 8th row and count. Hmmm-I am 8 stitches short. That is what happens when you only cast on 9 stitches on each row. By 11pm I was frogging 8 rows and starting all over again. Do you just love the feeling of knitting something over again??