DH was apparently a promising footballer as a teen. He played for the junior division of a premier league team and was pegged to play for the adults (sorry don't know the right terminology) team when he was older.
His parents split when he was 14, and went through what sounds like a nasty bitter divorce. Neither of them took him to training after the split (1 hour drive 3 X a week) as they were seemingly point scoring with the other one ("well I'm not taking you as your dad didn't bother last week" kind of thing). They also quickly found new partners which took up lots their time 
They had to sell up as neither could afford their (gorgeous) house in the country, and they moved into the nearest city into fairly rough neighbourhoods.
DH got in with a bad crowd and started skipping school to go to the local park and drink. Football career totally down the pan by the time he reached 15.
He's teaching DD to play football, and now plays in a Sunday league, and I can tell from watching him how good he is, and how good he could have been (although he's in late 30s now so now chance of reviving career). He's not a bitter man generally but this does get to him that he threw it all away and that his parents forgot about him and his dreams.
He does however run a very successful business now - he's not a millionaire or of football proportions, but we don't do too badly. And he's happy.
He's also often said it could be a blessing in disguise - he said he thinks money would have ruined him at a young age as he was immature, stupid and impulsive. He also picked up a rather worrying drug habit at age 18, and said had he been rich enough, he would have ended up buying endless amounts of cocaine and have ended up killing himself 