Time Management is the key to success. Proper time management can do wonders. Those who complaint that they never get time to sleep, eat, play with children, talk to spouse ,complete their assignment on time have one thing in common-unmanaged time.
There are 24 hours in a day if you are 18 years of age and sleep for 8 hrs a day, play for 2 hrs, eat in 1 hrs, study for 4 hrs, talk to friends for 1 hr and other things take 4 hrs then imagine how much time you had in your entire life and how much of it you used for constructive work and how much of got wasted.
Time management is not a rocket science the only prerequisite is that one should have the will to do it and courage to enforce it. If you make a time table and assign time for every thing things will become a lot easier, but the condition is that you have to strictly adhere to it. Once you cultivate this habit then things will start getting better. This is the only mantra of successful people.