Many people are struggling due to lack of sleep nowadays. On many occasions, people sleep less than 7 hours on business days, and then they're trying to fix the mistake by taking a long nap on weekends, which is never a good thing. After the weekend, the cycle continues.
People are getting used to lack of sleep very fast and its drawbacks are never late. It starts from anxiety, followed by a lack of concentration at work/school, which leads to less productive working/studying days. It's not an easily noticeable thing, but it harms the daily routine. Students, in particular, don't pay attention in classes, which means they don't learn well and, eventually, fail their exams.
In a perspective, lack of sleep damages health too. It takes more time for the body to heal wounds and immunity gets vulnerable to various diseases and viruses.
In order to start getting enough sleep every day, one should create a daily schedule, which includes at least 8 hours of sleep. Sleeping early helps too since in many cases people have to wake up early in order to get to work/school in time. Consuming coffee in the evenings forces the body to stay awake at late hours, thus it harms sleep and should be excluded from daily routine.
I had been struggling with this problem myself in university as my grades getting lower and lower. No matter how hard I had been trying, I couldn't fix them. Then I realized, that the lack of sleep was my number one problem and I started with scheduling my sleep hours. Having the fixed hours of sleep helped me a lot both mentally and physically. 
 Many
  people
 are struggling due to  
lack
 of  
sleep
 nowadays. On  
many
 occasions,  
people
  sleep
 less than 7  
hours
 on business days, and then they're trying to  
fix
 the mistake by taking a long nap on weekends, which is never a  
good
 thing. After the weekend, the cycle continues. 
People
 are getting  
used
 to  
lack
 of  
sleep
  very
  fast
 and its drawbacks are never late. It  
starts
 from anxiety, followed by a  
lack
 of concentration at work/school, which leads to less productive working/studying days. It's not an  
easily
 noticeable thing,  
but
 it harms the daily routine. Students,  
in particular
, don't pay attention in classes, which means they don't learn well and,  
eventually
, fail their exams.
In a perspective,  
lack
 of  
sleep
 damages health too. It takes more time for the body to heal wounds and immunity  
gets
 vulnerable to various diseases and viruses.
In order to  
start
 getting  
enough
  sleep
 every day, one should create a daily schedule, which includes at least 8  
hours
 of  
sleep
. Sleeping early  
helps
 too since in  
many
 cases  
people
  have to
 wake up early in order to  
get
 to work/school in time. Consuming coffee in the evenings forces the body to stay awake at late  
hours
,  
thus
 it harms  
sleep
 and should  
be excluded
 from daily routine.
I had been struggling with this problem myself in university as my grades getting lower and lower. No matter how  
hard
 I had been trying, I couldn't  
fix
 them. Then I realized, that the  
lack
 of  
sleep
 was my number one problem and I  
started
 with scheduling my  
sleep
  hours
. Having the  
fixed
  hours
 of  
sleep
  helped
 me a lot both mentally and  
physically
.