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Many talnted young people decide to drop out of school in order to be a professional athlete. There is no doubt that this decision may be a big chance for a talented person who does badly at school. On the other hand being a professional is very hard and often thankless way. Let us consider advantages and disadvantages of this idea.
First advantage of this idea is that youth who can not achieve high academic results despite the great effort can take this time to training and thus achieve a success. Secondly, this decision means that a young person takes responsibility for their decision and becomes an independent person. Last, but not least, I do not see a reason why should anyone do things which they do not like and do not want to do it in the future.
On the other hand, it is generally agreed that a professional athlete can only be until about forty years old so after that there is a need to look for way to earn money. Moreover, the lack of the occupation could be a big problem after the end of their sporting career. What is more, it is said that being a professional athlete is very hard way and only the best and most talented people can achieve a great success.
To sum up, decision to become a professional athlete could be a great chance to achieve a great success but those teenagers should be absolutely sure that they want to be a professionalists beacuse of many dangers of this choice.

Many talEnted young people decide to drop out of school in order to be a professional athlete. There is no doubt that this decision may be a big chance for a talented person who does badly at school. On the other hand being a professional is very hard and often thankless way NIEWDZIĘCZNY SPOSÓB?. Let us consider PRZEDIMEK advantages and disadvantages of this idea.
PRZEDIMEK First advantage of this idea is that youth who can not<-RAZEM achieve high academic results despite ROBIENIA theA great effort can take

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... this time to training and thus achieve a success.
Last, but not least, I do not see a reason why' should anyone' (zla kolejnosc slow, tutaj 'anyone should') do things which they do not like and do not want to do 'it' (niepotr slowo, ale i tak zle, bo masz things'-l. mnoga, to nie mozesz uzyc 'it') in the future.
On the other hand, it is generally agreed that a professional athlete can only 'be' (nie, 'be' znaczy tutaj 'zyc' oni zyja dluzej, ale nie moga wykonywac tego juz zawodu, trzeba 'participate in the sport') until about forty years old so after that there is a need to look for (przedimek) way to earn money. Moreover, the lack of 'the' (niepotr) occupation could be a big problem after the end of their sporting career. What is more, it is said that being a professional athlete is (przedimek) very hard way and only the best and most talented people can achieve 'a' (wg mnie tutaj niepotr) great success.
To sum up, (przedimek) decision to become a professional athlete could be a great chance (tutaj mozesz dodac ...in order) to achieve a great success (daj tutaj przecinek przed slowem 'but') but those teenagers should be absolutely sure that they want to be 'a' (nie potrzeba przedimka przed l. mn) professionalists 'beacuse' (ortgo slowo jest 'because') of (przedimek) many dangers of this choice.

Jeszcze raz popracuj nad przedimkami......(a, an, the)