I agree that Davening today is a huge challenge. The Baal HaTanya writes openly in Tanya that davening with kavanna is true mesiras nefesh, and a person should not get down on himself even if he needs to stop and refocus a hundred times. I also, as with everyone else, have trouble living up to what davening SHOULD be ideally. In our generation, we can only try our best. But if we rush through it, we have no chance at all.
As for the maamarim, please do not get the impression that I have learned every maamar of these three rabbeim. That is a lifetime of work. I envy those people who are capable of writing the notes on these seforim and quoting all sorts of other places in these seforim that a topic is discussed.
Also, sorry it took me so long to reply. For some reason, the system stopped giving me notifications of follow-up posts.