Overthinking affects a game of online Poker in many ways. It preoccupies your minds, makes you worry about your hand, what will be your next move and more. If you have so much distraction and thinking altogether, you won't concentrate on the game and eventually lose it. So, it's always advised to keep your mind free before you begin a game of Poker. If you want to start your own poker game or participate in online poker tournaments, you can visit Pokerlion and start playing on their playing.