Everyone remembers when Roger Bannister broke the mental barrier of running a mile in less than four minutes, and once he did, others followed soon thereafter. But there are two other mental barriers to consider, one of which could be coming down in the not-too-distant future. The two barriers remaining are when a professional golfer shoots 18 birdies in 18 holes (something Ben Hogan thought was possible since he himself had shot 12 birdies in 18 holes at one time) and the other is when a major league baseball player consistently bats over .400 during a season. From my perspective, it isn’t that much of a stretch for a batter to get a hit 4 out of 10 times at bat rather than 3 out of 10 times. Major league baseball players I’ve discussed this with are adamant as to how impossible that would be to do on a consistent basis. And yet, once it’s done, I feel confidant others will start batting over .400 when they realize it’s only a mental barrier and nothing is holding them back but themselves. But getting back to the 18 birdies in 18 holes, I believe that if Tiger Woods continues to date Lindsey Vonn and in fact marries her, you will see him pull far ahead of all other golfers in tournament victories and he could well be the first to make 18 birdies in 18 holes. And once he does…