Yes, I can.

"If you can imagine it, you can achieve it. If you can dream it, you can become it."
                                                                   ~William Arthur Ward

To Dream is the first step for achieving anything in life and the next step is putting best efforts in executing that dream. You are capable of achieving anything that you dream of, all that is needed is the hard work and motivation towards achieving it. Sooner or later you'll surely succeed in bringing your criticizers to their knees.

I can climb the toughest cliff,

I can dig the deepest hole,

I can dive into fathomless sea,

I can crawl the tallest tree,

I can fly to touch the sky,

I can be the apple of your eye.

All I need is the nerve to dream,

And transform my dream into a scheme.

My dream will get its wings to fly,

Hyper-critics will regret for their decry.