B"H
Imho [In my humble opinion] I feel that i have a good grasp on the tachlis ha'avodah in our world, making Hashem a dwelling place here, and the various means to do so. Just sometimes it becomes overly theoretical and hard to feel that we're special and really achieving all we can. The advice I've received from my teachers and mashpiim in yeshiva has been somewhat along the lines of: we must learn and be fluent in our limud Torah,have emunah in Hashem and work fervently in prayer, service of the heart-- and if we're zocheh to feel, then that's great, but if not its ok too.