Parshat Noach starts with Hashem's decision to inundate the world with a flood, saving only Noach, his three sons, and their wives and animals to propagate the species. Noach and his family stayed on the ark for over a year (although it rained for only 40 days, the earth was still covered with water for a longer time) and during this time they were responsible for taking care of the animals on board. Any zookeepers online? Well, we'll just have to use our imagination...two animals of every species in the world each demanding his/her appropriate food at the correct time of day....the amount of work entailed is mind boggling. And Noach set himself to the twenty-four hour a day task selflessly giving away his every moment during this time period. When Noach was once late with the lion's food, he was bitten; he was expected to be on time to feed the King of Beasts. There was no respite for Noach, no private "my" time, and he did his duty with love. Rav Dessler in his Michtav Me'Elyahu states that Noach would not have been able to do this if not for the love of his fellow creatures. Hence the "secret of success" for Noach and all of us to achieve the ultimate in giving is boundless love of our fellows, our children, spouses, our entire nation. Giving, in turn, engenders more love of the subject. As Rav Dessler explains elsewhere, ahava-love comes from the root hav- meaning give. By giving to the subject a part of our self becomes intermingled with the subject, enabling us to love it.