I consider myself to have used the methods of LW to EXTREME effect. however, there is really not much to show for it since the vast majority of it is in compensating for mental illness that otherwise would make me abnormally irrational.
Actually, if LW techniques can ameliorate clinically diagnosed, organic mental illness then this is extremely interesting. Most methods can't.
It might be useful if we fellow LW'ers collect actual big scale success stories of ourself in real world applications. Since we are supposed to win some real life experiences of actual winning would be great.