\documentclass{article}
\usepackage{labels}
\begin{document}
\numberoflabels=19
\boxedaddresslabel{Me \\my street \\ mytown \\ England}
\skiplabels{2}% Make 21 on first sheet
\numberoflabels=16
\boxedaddresslabel{You \\your street \\ yourtown \\ England}
\end{document}