One of the traps that new Texas Holdem players fall into is the undying love of the Ace. The problem with this unrequited love is that playing an Ace from any position, with any kicker, will often times lead you into big trouble by "the river."
After losing a colossal hand at a high stakes table, Mike McDermott in the movie "Rounders" thought to himself how he forgot the cardinal rule: "always leave yourself outs." When it comes to Texas Holdem, he's referring to the yet unseen cards that could help improve or make your winning hand. This also applies to life away from the table, but the "outs" aren't always as easy to determine.