N. overestimation, exaggeration, vanity, optimism, pessimism, pessimist, much cry and little wool, much ado about nothing, storm in a teacup, tempest in a teacup, fine talking

V. overestimate, overrate, overvalue, overprize, overweigh, overreckon, overstrain, overpraise, eulogize, estimate too highly, attach too much importance to, make mountains of molehills, catch at straws, strain, magnify, exaggerate, set too high a value upon, think much of, make much of, think too much of, make too much of, outreckon, panegyrize, extol, extol to the skies, make the most of, make the best of, make the worst of, make two bites of a cherry, have too high an opinion of oneself

Adj. overestimated, oversensitive

Phr. all his geese are swans, parturiunt montes