no, no, it's not bad, it's an expected part of any adventure story. The hero doubts if he can even pull off the whole idea. It's good, really. But, it DOES require some tweaking in the grammar department, and sometimes, spelling. Other than that, the imagination part is not really lacking, just needs to be developed. Not everybody can write or imagine at the same level. (blame it on tv, it makes it not as necessary to imagine)
“…Judge not what a man has done, but judge what he could have done if he was a different bloke altogether. For art thou a leper? And a leper can changeth his spots…” --Rudy Wade, Misfits (Series 4, Episode 8)