is 7m really that difficult?

seriously, is it that difficult to break the 7 meter barrier? i dun think so. competitions after competions, i see people running slower than me, taking off without so much height, clearing 7m. it just makes the whole 7m target so easy. but why can't i clear it? i guess it only proves one point, i have a very inefficient conversion of speed into my jumping distance. i need to have the break through..