am i just not good??????

ive recently started playing 55 sngs 4months ago....since then my first 1000 went great with a roi of 19%...but recently the last 400 or so ive been at -10%....was i running that good for 1000sngs at the 55s....and is it because of my bad play that im loosing money righ now....or is it that im juss running horribly righ now......i feel like im just getting sucked out on a lot....2-1s, 3-1, and 4-1 hands are juss not holding up....at all........has anyone ran this bad or am i just not a good player....the only program i use is sng tracker.....i just want to know what i can do to get a better edge for my opponents....icm, sngpt.....anything.....