Yes I believe in sustained streaks of good or bad luck in poker, and I’ve experienced both on several occasions.
Especially when playing MTTs, involves high variance! To realize your expected profit might require a massive sample size of 1,000 or 2,000 games, and within that timeframe, you inevitably face ups and downs. There are days or weeks when everything seems to be going perfectly, followed by periods where you stop winning coin flips and run into more "coolers." The tide can turn against you for days, weeks, or even months until you manage to overcome the slump and get back on a positive track.
If even a profitable professional player can go through periods without winnings, or even suffer losses, just imagine the situation for amateur or semi-professional players.
If we want to play poker consistently, we absolutely must be prepared for those negative streaks, perhaps even more so than the positive ones. Because after a good run can easily turn into a disaster if a player decides to move up in stakes prematurely due to their success, only to end up in a major downswing..
. So i'm going to say it's all about the cards or may it's your seat 
