I'm writing my motivational letter but I have a big doubt: Last year I applied for bocconi university but I didn't get the admission, I think because my grades were not enough high and I did a bad admission test (I didn't have the GMAT). So I took the bachelor's degree in economics in october 2012, I have increased my gpa and I have got the GMAT.
I don't know if I should write on my motivational letter that I had not get the admission last year so I preferred stop my study for a year, travel around the world, and retry to enter at bocconi instead keep going studying in a not so good university. I'm scary that the admission office sees my one-year-stop as a lost of time rather than a commitment in trying again to enter at their university.
Should I write my trip (where I have worked as a waiter and improved a lot my english) and the motives that brought me to stop my studies or should I write just a usual motivational letter in which I explain why I want to enter in their university but without mention that It's not the first time that I try to be admitted at their university?
You need to think carefully why you believe Bocconi did not accept you. Whatever that was, evaluate then if this gap year has helped you address those shortcomings.
One thing I don't understand is that you "took the bachelor's degree in economics in october 2012". What does that mean? That you finished your undergraduet degree in october last year? If that's the case, maybe you need a lot more before you are ready for business school.