Many people believe that children should be taught that they can achieve any of their dreams if they work hard.
On one hand, it is important to maintain children's confidence during childhood. A young child may not fully realize his own potential and opportunities that lied before them. For instance, a child from a simple Ukrainian family, at first glance, has no chance to study in the United States or the United Kingdom as the study in those countries considered to be very prestigious and expensive. However, there are plenty of study programs and scholarships open to every child with excellent English and decent marks. Thus, it is the responsibility of parents to explain to children that almost every dream, e. g. study in a foreign country may come true with duly efforts, like bookworming study at school and learning English.
On the other hand, children who were told that they can do everything they want may grow up into irresponsible and spoiled people. Thus, the balance in praising children's abilities shall be kept. Moreover, I think parents shall also clearly evaluate the child's abilities or conditions. For instance, a child with health issues cannot become an astronaut, or a teenager with criminal records in past cannot apply to some state jobs, regardless of their level of effort.
In conclusion, I think that it is important to assure children about their own abilities and encourage them to achieve their dreams, however parents shall specifically highlight that it is only possible through blood, sweat and tears. 
 Many
  people
 believe that  
children
 should  
be taught
 that they can achieve any of their dreams if they work  
hard
.
On one hand, it is  
important
 to maintain children's confidence during childhood. A young  
child
 may not  
fully
 realize his  
own
 potential and opportunities that lied  
before
 them.  
For instance
, a  
child
 from a simple Ukrainian family, at  
first
 glance, has no chance to  
study
 in the United States or the United Kingdom as the  
study
 in those countries considered to be  
very
 prestigious and expensive.  
However
, there are  
plenty
 of  
study
 programs and scholarships open to every  
child
 with excellent English and decent marks.  
Thus
, it is the responsibility of parents to  
explain
 to  
children
 that almost every dream,  
e. g.
  study
 in a foreign country may  
come
 true with  
duly
 efforts, like  
bookworming
  study
 at school and learning English. 
On the other hand
,  
children
 who were  
told
 that they can do everything they want may grow up into irresponsible and spoiled  
people
.  
Thus
, the balance in praising children's abilities shall be  
kept
.  
Moreover
, I  
think
 parents shall  
also
  clearly
 evaluate the child's abilities or conditions.  
For instance
, a  
child
 with health issues cannot become an astronaut, or a  
teenager
 with criminal records in past cannot apply to  
some
 state jobs, regardless of their level of effort. 
In conclusion
, I  
think
 that it is  
important
 to assure  
children
 about their  
own
 abilities and encourage them to achieve their dreams,  
however
 parents shall  
specifically
 highlight that it is  
only
 possible through blood, sweat and tears.