The Sh'ma opens with the commandment to love the L_rd your G_d with all your heart, all your soul and all your resources.
To help protect the sanctity of Shabbat, there are laws which build a fence around the observance, keeping sanctity of Shabbat a step away from desecration; are there similar guidelines or laws in halacha to help protect the observance of the commandment to love Hashem?
I can think of many instructions which contribute to one's loving Hashem - for example, the many blessings of thanks help one keep in touch with one's gratitude for the pleasures of existence. But what is there that is expressly concerned with avoiding damage to your own, or someone else's love for Hashem?
Are there guidelines for Rabbis and other teachers, maybe, on how to instruct people in matters of observance in such a way that the recipient of their guidance understands observance as a path to increased holiness and doesn't mistake it for a burden? Is there advice for individuals on how to approach a mitzvah so that it can be appreciated, not merely fulfilled (or even just endured)?