DREAM VS. AIM

As usual., I am almost 22 years old now, and there is one same depressing question which keeps on bothering. But if you talk about me , I've never given this question any importance, I thought may be with time it will come to me , And was hoping one day I'll get enlightened from above (all mighty) that this is the task you have to perform son. After that, i'll be like on the top (a superstar). but now, days and years are moving faster , and the depression is getting heavier .
By The Way the question which haunts me is WHAT IS YOUR DREAM , WHAT DO YOU WANT TO ACHIEVE..?
Why it is sounding the most difficult question ever. as soon as I hear it , I pity myself.. and there is a sudden inner voice (yaar itna bada hogaya hain aur tujhe yeh bhi nahi pata, tera kuch nahi ho sakta,).
Anyways...
Few days before I was asked in my french class .. ok tell me your dream, so I thought the time has come I should start  thinking about it seriously(enough is enough i should know what is my dream at least). At first I thought of so many things like- 1. I want to have a degree of llb which will happen by passing my exams, 2. I want to be the best in sports , 3. I want to be a top entrepreneur ,4. Want to be happy as well as satisfied, 5. Want to have an abundant amount of money, Actually i am not sure what i want to be , because there are lots of immediate things I've been craving for . So i was left with no answer (how can I have so many dreams and which one should be ranked higher).
Then after giving it a thought, the outcome is, may be i am not understanding the question properly.
First I should know What does the word DREAM means..?
so on that same day after having a brief discussion with my sir (who is more of a friend)  that, Dream is something which is not possible to achieve at the moment by looking at the circumstances, or near to impossible (being an optimist person as I always Am). I suppose answering a dream could be a kiddish job, or something like a fairytale i.e.- I want to be like  Roger Federer , Sachin Tendulkar , Tom Cruise, Barack obama, Bill gates etc.(which sounds a bit unachievable  in comparison to d previous 5).
                                                
                                        So like I said before ,I wanted to have so many things, So those things for example like passing my exams, or doing good in sports, can be termed as my AIM or  GOAL, for which i have already taken a step towards achieving it, and will work my *** out to achieve it.
So my final answer to the question WHAT IS YOUR DREAM (IF I HAVE ANY) : IS-


My ultimate dream would be to convert my dream into an Aim and work my *** out in achieving it.