If you don't have a diploma, you will never get a great job. You will struggle all of your life to get to where you wish you were. To achieve the career that one desires, one would work their hardest. As much as it takes. If one does not do so. They do not get said desired career.
If i could be someone for a brief moment, it would be Bill Gates. He is a successful man, he definitely got where he wanted to be. I would tap into his memory for just a minute to see if he worked his hardest, and if he ever once did not try his best.
I hope that gave you some ideas. I think this is better than what i would write if i had this essay.