Even when you lose a game due to some blunders on your part, do not lose your heart because you may take consolation from the fact that there are Grandmasters and World Champions to give you company!
In the above position, Alekhine (I am sure you now know about him!) as Black played Qxf4, without realizing that White could now play Nh5+ with a Knight fork to capture the Black Queen! But White, a relatively unknown player, also missed this golden opportunity thrown his way which would have won him the game then and there! Instead, he replied with Nxe4! This game earned its place in chess history not because White ultimately prevailed against Alekhine but because of the absolutely incredible double blunders!
