The exact amount of skill vs luck involved in poker is extremely difficult to quantify. In any given hand of poker, luck plays a major role. The best pre-flop hand in Texas Hold'em is AA, and the worst hand is an unsuited 72. And yet, 72o will still beat AA 10.78-12.40% of the time (depending on the suits). So, you can play the worst possible hand in the worst possible way and still win, or play the best possible hand in the best possible way and still lose. However, as you play more hands, luck will become less of a factor and making winning plays will result in profit and making losing plays will result in losses. Just as you can call "heads" and be right on 2 consecutive coin flips 25% of the time, your odds of being right 10 times in a row drops to 0.1%!Luck will always play a factor in every session of poker you play, but if you want to stop losing at poker then you need to focus less on luck and more on improving your skills! To the right is a graph showing the impact of luck on my results in a weekly cash game I play. The math behind the graph isn't 100% accurate, but the graph (or rather the dotted exponential trend line) nicely conveys how luck is a major determining factor for a single session, but declines over time. A key take away here is that luck is still a significant factor even after 20 session (about 100 hours of single table online play).