Saw this on a slide from Coach Jamie Turner, who is most well known as the coach of Gwen Jorgensen.
"Forget illusions of balance - it's about total commitment!!!"
This is often something athletes and coaches have a hard time with. They aren't willing to give up some of the luxuries in their lives, the things they perceive as the balance side of the triathlon equation. I know even myself as a coach, I can't train a squad in Europe and all over the globe, focusing on the ITU WTS series, because my wife and 3 yr old son are too important to me right now. This is why I started a junior program, where I could meet the commitment, and there is no issue with balance. Someday, I hope to make the next step and coach an ITU focused squad.
For some athletes, (from ITU elites to Ironman age-groupers), they can't totally commit because the risk is just too great, (job, finances, mortgage, family, etc.). But the problem is, without the risk, you can't achieve the reward. That reward is going to those who do totally commit.