How long till lunesta is habit forming?

Hydroxazine works for me for about 4 days then I usually take lunesta 2/3 days a week. I've tried many times to come.off the meds and I absolutely can't sleep. It's a lifelong issue i just started to medicate a few years ago

Anyone know approximately how many days in a row I can take lunesta before it becomes something im "addicted" to? I'm trying to avoid that if possible.