The following link will take you to an amazing essay based on Nachlas Yosef and a powerful message from Megillas Rus. It is well worth the print out (only 9 pages) and worth the time to read. I first heard this as a mussar schmooze (by Rabbi Moshe Wruble) while learning in E”Y in 1991. The message of how powerful even small choices are stays with me and is often times a source of comfort when I fall into thinking that “my actions don’t really change things”.

Redeption and The Power of Small Things- based on Nachlas Yosef by Rav Yosef Lipovitz