Tzava'at HaRivash Chapter 11
Can copy this into an AI, or connect the whole library to your assistant. For deeper learning, you can directly use the original seforim, sites, and apps.
ובכל דבר שיעשה יחשוב שהוא עושה בזה נחת רוח לבוראו ית' ולא לצורך עצמו אפילו מעט. אפילו אם עושה שיהי' לו תענוג בעבודתו לא יהי' לצורך עצמו.
The Way of The Baal Shem Tov. Adapted into English by Rabbi Amiram Markel and Yehudah Shimon Markel, 2020
In everything you do, think to yourself that through this you are giving satisfaction to HaShem, your Creator, blessed is He. That is, do it for HaShem, not for yourself, even a little bit. Even if you do it for the delight of serving HaShem, this too is for your own self-interest.