I'd like to share words of Swami Paramadvaiti Maharaja. I think that it can be ispiring.
"Question: What pleases the Guru most ?
Answer: That depends upon the time. Famous example the Guru asks for a glass of water and the disciple was very smart and thought milk is better then water, so he brought milk and the Guru wasnt pleased. So what pleases the Guru most is a general question, I think that is so obvious, that the devotee becomes a pure devotee. One time Srila Prabhupada was asked the same question by a stern book distributor who wanted to kind of get into his portfolio this last statement of book distribution that there is nothing higher in the world. And he was sure that he was going to get that statement for his portfolio. And Prabhupada he could understand this agenda. And he said: It pleases me the most that you become pure devotees of the Supreme Lord. So they had no way to go out, find any ritual or any other thing to do. Really becoming a pure devotee that entitles to be very cautious that the details don't escape. Because what are the details ? Love is a question of details. There are so many details. And those details means you care. Like a detail is if you have salt on a table or not at the time of eating. It may be a little detail, but it is important. So in the path of spontanuous devotional service, these teachings of Srila Rupa Goswami, we find that the details are according to time and place different, and according to rasa they are also different. Like what the gopas do for Krishna has a different priority then what the gopis do. And what the elder members of Vrindavan do has another priority. So in this way even that is very hard to say. Srila Prabhupada used to say: A disciple takes the order of his spiritual Master as his life and soul. And whatever that order was and whatever he can make out of it, that I guess will be his path to get that love. "