To bush: (v.) To blunder blithely into obviously disastrous circumstances against all advice, as in "he totally bushed the whole thing - he walked into that nightmare with a huge happy smile on his face and actually seemed surprised when it blew up, even though we all told him it would."

Alternatively, to construct a dreamlike version of the world (a bushtopia) in which one's vision is compromised (bushopia) and sees blunders as successes, disasters as promising developments, and missions as accomplished before they've really begun. To live in such a dreamworld.