Last year, I worked with Charlie, a typical kid. He was a bright student, taking a few honours classes and scoring around the 90th percentile on standardised tests. He ran cross-country in the autumn and played lacrosse in the spring. He had a group of close buddies that he hung out with on most weekends.

But every Wednesday when we met, he shared different variations of the same problem: a test that he had bombed because he forgot to study, a missing piece of equipment for lacrosse that caused him to sit out the practice, a paper that he procrastinated writing until really late on Sunday so he had to pull an all-nighter, or a completed homework assignment that he forgot to take to school.