I agree with above comments,you cant woose out in late stages of a tournament,especially if you have chips to play with.
You will be surprised how fast them chips go when you are sittin gout and the blinds get big.You cannot be afraid of similar size stacks,or you will be pushed around like crazy by them,
Understand that in these big mtt at one point or another throughout the tournament you are gonna have to race someone,there is not one tournament I can remember where I didnt have to dodge at least one bullet to end my tournament ,and if you give me hips in the late stages of a tournament you better believe im playing them,and keeping an eye out for players like you that are scared to use theres,and picking up blinds like crazy.
Not being mean just being honest. loosen up....