Being out of position means that our opponents will get to see how we act before they do, giving them more information on the strength of our hand than we have on theirs. The fundamental reason as to why the small blind is such a difficult and losing position in the hand is due to the fact that we are going to be first to act in every round after the flop. The problem with playing in the small blind. When playing in the small blind our aim is to try and reduce the amount of money we will lose, so that we can increase our overall wins from the other seats at the table. The best players in the world find it difficult to win money from the small blind, and that's just the way it is.
If you were to track your performance in each position at the table using a program such as Poker Tracker, you will find that the small blind is a losing position overall. The small blind is a very tricky position to play from in Texas Hold'em. Blind leakage is an exceptional video by James 'SplitSuit' Sweeney that covers everything you need to know about profitable blind play (both in the SB and BB) in Texas Hold'em cash games.
