When I was in the last year of secondary school, Chemistry was
easy for me, the most part of the time, but, one day something happened. We was
going to have a test, and I was ready like always. The test had a part of
concepts and the other part of some exercises, stoichiometry if I remember
correctly, and well, the test started and our teacher wrote some formulas in
the blackboard for helping us, just for a few minutes. The time had finished
and I was happy because I felt that I had completed the most part of the
questions right.
The day that the teacher gave us back our tests, she said that she
was going to let us look it first, for look the points, if all was in order,
and then she was gonna call us in list order for put the mark in the book of
class, or correct if it was necessary. I was nervous but expecting the best,
and then, she looked at me and said sadly "what happened?". I
had obtained a red mark, a 3 and something, I had a few tenths for before
homework, and she also knew that I always put attention and completed the
homework, so she puts me a 4. The thing that happened was that I got
confused for one sign in the formula, and that make that all the development
and results of the exercises was wrong. After that, Chemistry got hard for the
rest of the year for me.
I always remember that day, and I said that it couldn't happened
ever again. And then, I got in the University. Test of introduction to
calculus, and I was ready for the most part, except trigonometry, but in that
moment it didn't care to me. I got out of the room, I was sure that in the part
of "potential and exponential functions" and "limits", was
almost all right. But, surprise, the first part was right, but, here we go
again, in the limits part I got confused by a sign and, instead of adding, I
subtracted, and with that all the rest go bad too.
Don't be like me, if there's time to go slowly, or for check that
is all right, do it, not matter the nerves, or the desire to just finish and
leave. And this doesn't go necessarily for things like this, if you have time
to do something that you really want but don't do just for excuses, think it
again, it can make an important change.