Piecrust

Beliefs are very powerful. When you change your beliefs, you change your behavior and thus your outcomes. This is not some new age feel-good idea. There is solid research to back this up. I'll give you two examples. Gunder Hägg, a Swedish athlete, held the record for the one-mile run at 4:01.4, which he achieved on July 17, 1945. It took nine years for that record to be broken. On May 6, 1954, Roger Bannister broke that record and ran the one mile at 3:59.4. Only two months later, that record was broken, and every few years since then the record is set lower and lower.