In the following chess board pictures from a game played at ICC, White greedily plays a sequence of moves that wins a pawn. Understand that White winning a pawn or Black gambiting a pawn is sometimes synonymous. He played Re1 check and Black replied with the blocking Be6. After Ng5, White does have an extra pawn in his pocket, BUT at the expense of his undeveloped Queen Side! Moreover, note that the White Bishop at b5 is lost in space.
White has 6 pawns to Black’s 5 pawns, but Black’s army is full mobilized and poised to swarm and destroy.
After Qd7 attacking the pawn hungry Rook, Black’s towers are connected and his pieces could not be better placed to overwhelm White. All because the first player could not resist the greedy acquisition of material. Many beginners confuse chess with checkers and want to capture, capture, capture, …… Just remember the sage advice of GM Yasser Seirawan ( or perhaps it was the advice of one of Seirawan’s teachers) , it is not what comes off of the board, it is what remains on the board that matters!