Whenever I heard quotes comparing life to a game of poker, it never did make sense to me. Because I did not play poker.
Recently we had a guest at our place, who has played poker professionally in the US. And he got all of us into this game. And gradually I began to get the meaning of those quotes. I won’t go into the details of the game here, as there are plenty of sites which can give you that. I will only encourage non card players or non poker players to try it out. And this being my first card game (i had not played any non-trivial card game before), I can vouch for it being interesting.