what do you think of this essay?

if you could give me some feedback , I'd appreciate it.
the task was :
write an essay for your tutor, discussing two of the benefits in your notes. you should explain which benefit you think is more important giving reasons. the benefits:
*reduces stress*improves productivity*increases creativity

The benefits of positive thinking

It’s well known that there are many benefits of the so called positive thinking. It leads a man to success, if you think you can do it, you’ll put your best to achieve it. But what are the advantages of training students to think positive?

Although is very easy for students to get stressed by deadlines or by getting lower grades than what they had expected, if they would be more optimistic, without going unrealistic, they would put their problems into perspective and therefore coping with them would be much easier, thus ,the stress of those situations would decrease if not disappear.

What’s more, having a positive outlook would also help them to have more self-confidence. Consequently, they won’t feel nervous during an exam or when having too shorts periods for handing in homework, believing in themselves will give them the strength and motivation they need to accomplish whatever is on their plans, and so improving their productivity.

I am convinced that reducing the stress is the most important benefit of positivity, because problems often stem from stressful situations. And after all, school days should be enjoyed to the hilt for us to develop properly. However I’m not saying that school should not be taken seriously, but stress can cause damage to our health and heath comes first before everything else.