Suppose someone gave you $10,000 each and every day. A wealthy benefactor who asks for nothing in return. I would think that at the very least, one ought to feel and expression his appreciation. But this benefactor doesn't even expect that in exchange for your daily allowance. Pretty good deal, don't you think? Now, if he stops giving you that allowance one day, could you possibly have any complaints? Does it enter your mind to have complaints? What about if you were rude to his children, took his stuff without asking and used it for things he didn't like. And he *still* kept giving you the allowance? Maybe after a few years he drops the allowance to $9,500 per day. Not out of spite, but just in hopes you will stop the damage... and, of course, that $500 a day doesn't come close to covering the expenses to clean up after your messes. Now you are thinking, "No one is going to give me $10,000 a day; no one is even going to give me $10 a day for nothing,...
This is a paraphrase of the pasuk in t'hillim 84:7 -- "mei'chayil el chayil" -- which means "from strength to strength". In this case, it is my thoughts and ideas to those who are strong enough to be interested :)