What I want to know is how Borland was convinced to give up millions of dollars and fame (now - and potentially later), for his long-term health and increased longevity (in the future)? In describing the decision the article says, "[a]fter the season, Borland said, he consulted with prominent concussion researchers and former players to affirm his decision. He also scheduled baseline tests to monitor his neurological well-being going forward 'and contribute to the greater research.' After thinking through the potential repercussions, Borland said the decision was ultimately 'simple.'" Whatever techniques his family, friends, and researchers used to convince Borland to make the right choice for the future, they are techniques that could be ultimately valuable to anyone facing intertemporal tradeoffs between the want and the should (things that give us short-run pleasure at the cost of long-term gains or that come with high long-term costs).
Just to get an understanding of the hits players take and how they affect visual memory and cognitive impairment, I found the infographic below. It's shocking how many hits NFL players experience in a season (over 1,000 for linemen and linebacker). Especially since the most impairment was seen in those players taking a lot of middling hits (because of the representativeness heuristic players may expect only big hits to have big consequences, but in reality it's all the smaller hits that they probably don't even pay as much attention to that can lead to the deterioration of brain tissue and cognitive impairment).