Giving Hashem the Most Pleasure
Tzedakah & chesed
When others urged him to open a yeshivah, Rav Eliezer Zusia answered that his yeshivah would add nothing to all the others. He taught that a person who wants to do a mitzvah must ask how he can give the most pleasure to Hashem. He then founded the Chesed L'Avrohom network of schools instead.
Source: Reported saying of the Skulener Rebbe