People don't care how much you know
until they know how much you care.
As young parents (which I am NOT at this point in my life), people often spend much of their focus on expanding and developing their careers with the philosophy that their new employment opportunities and salary will benefit their children in the years to come.
Futhermore, we sometimes live with the false impression that young kids require more time than teenagers or adult children; however, my experience has been quite the opposite in that my older and adult children have needed just as much and even more attention than the did when they were little.
Earlier in my career as a teacher, I spent a great deal of time presenting and traveling with the idea that this exposure and experience would get me ahead in my field. (Hey, who wouldn't accept invitations to be a keynote speaker at conferences around the world?) I tried to justify the sacrifice of being away from family as a stepping stone to something greater for them. However, kids will never remember the awards and recognition that you received beyond the walls of your home. In fact, although teenagers might not readily admit it, they need your time, your ear, just as much or even more than they didn when they were crawling on your knee.
Fortunately, I have been blessed with plenty of adversity (and happy for it----after the fact), for it is the one thing that always seems to truly introduce man to himself. In a way, I'm glad I didn't realize how hard life would get over the years in raising a family, for in fact, if any young couple had any idea of the plethora of unfortunate events that generally come to all of us, fewer couples would probably get married. Personally, I saw my weaknesses and tried to make myself better.
Going back to balancing priorities, kids need to know how much you care about them, and such can be accomplished by the simpliest things (things I have done with my family): playing a game of chess, snowing camping in the mountains, running together in a race, gritting your teeth and daring to take your new driver on the freeway for driving practice, sitting up all night to watch a meteor shower.
Someone once said that you never see a hearse pulling a U-Haul (moving) truck, and in the same way, the only things that I believe that you can take with you after you die are your personal character and your family.