Read on to see what unfolds..... ....
Allow me begin with this quote, "Cherish your visions and your dreams, as they are the children of your soul, the blueprints of your ultimate achievements." - Napoleon Hill - 1883-1970, Author
Are you are putting in 14 to 16 hours on an average/day and you often work over the weekends, be it @ the workplace or @ home.
If you've answered yes, you are one among many these days.
Accepted good committed people are hard to find, talent is difficult to nurture. You are are one among a few chosen people who is "gifted" but you've no right to either abuse yourself or get abused.
In short, you are abusing the "God's gift to mankind," and that's your life. 
Agreed to be competitive, you need to be sharp. The world around you is making progress at lightning speed, thanks to 'technology,' but, just pause for a moment to take stock, as to where are you being squashed in the bargain. Whose race are you running? Yours or someone else's.
In the quietness among the dine of the world you surely will hear a voice within your heart that yells, "you are heading in the direction of a burn-out."
Do you think that the one's who drive you don't know that the outcome could also mean that jobs get done poorly. They know it well. They set stiffer deadlines, load more pressure to complete the tasks for the sake of growth, promotions, more money.  To keep their share of the market and to bottom lines healthy, the need for corporations to improve productivity and reduce costs has been obvious and probably necessary, and they find you.
You are just a "pawn" in their whole game. You be just one among many filling on of the squares their "chess board." 
Heart of hearts even you realize, but who are you sharing this with. 
Sadly none.
When speaking to parents they will only advise you that rest and relaxation are basic essential needs for maintaining both mental and physical health. You'll not disagree with them, nod your head and for sake of their peace and happiness. You will assure them that you will, but you will still continue with your life, in an "as is where is condition." You can't cheat everyone in this world, but please don't cheat yourself. You may even shed tears within you, but of what use, if you do not claim enough of your share of rest and relaxation, after the basic hard work you put. 
If you do, well and good otherwise, you are bound to be "burnt out." 
You will start to commit more mistakes, and also miss opportunities. Your employers probably will get what they want, and when it comes to rewarding you, it's just one among many. You could think you did "extra-ordinarily well," but they will say you "met expectations." This will cause not only stress, but more often than not leads you to becoming insensitive to every one around be it colleagues, friends and the family. Even a small wrong utterance, or misunderstood statement can lead to conflicts and tensions between people, leaving you with absolute no time to resolve. While this increased stress impacts performance and accelerates the counter productive spiral, on the other hand there is a serious drop in the enthusiasm for change and development, and life as a whole. It may even start seeming like that's another demand on life, and more people begin to further away from their families, friends etc. as a result of this.
IT companies are severely guilty of this practice. Their "Hire when they want" and "fire when they want" doesn't help the cause any more. Looking at them the others come to believe that the best way to go about succeeding in 'business' is to use the age old formula of "the carrot and the stick."
This seems to have become the order of the day....
It has been found that it has been much easier to reduce people than reducing the work they do. More incentive, more money, and there are many people who are ready to fill the gap by giving much more time to the organisation than they are actually contracted to do. Otherwise how does one explain people sitting late evenings into the nights attending conference calls with the clients, the project manager's of IT companies. This is sadly a default expectation, and the one's who are subjected to this stress, are unable to openly even convey their displeasure. Managers are well aware of the slogging they deal on you, but use a different ploy as they do not look at how people are working together or the systems are, they are using you as a tool for their growth. Just to keep you motivated and to console managers will consistently keep saying, "just wanted to see how to handle such situations better, as these are features that build you to higher positions in your career." This may be good for the profits of the organisation in the short term, but, in the long-range and in the long run, the consequences are entirely destructive, for the organization and the individual in particular.
I dare say the individual and the family is bound to suffer more, as the organizations can surely find people to do what they want for a price which they can afford. But you are the one who over estimates and thinks you are "indispensable." You'll be well advised to come out of this illusion.
One major weakness, this part of the world we live in has, is that people are praised and rewarded for working excessively, and so it's like an "addiction" and you don't realize that you are the victim. But who really cares, except your near and dear.
The solution to all this would be to clearly negotiate the negotiable and the non-negotiable, growing to become an "expert professional" in your chosen field living life on your terms, and leaving a 'legacy" for the sake of the generation that's following you.
The question for all of you to ask therefore is, "Why are so many people working late and what can we do about it?"
You ought not to ruin your today for a "Few of Dollars More." Preserve yourself for the many tomorrows,  you will make more than a "Fistful of Dollars," it's an assurance. Just say to yourself I need myself tomorrow just as badly as I'm needed today. Pace your innings and play the game of your life.
"The road to success and the road to failure are almost exactly the same." - Colin R. Davis