I know that hpv can come go away, and then come back later in life.. is it possible for it to do that more than once in a lifetime? if so, is that a normal circumstance or would it be rare?

There are multiple strains of HPV and infection with one strain does not preclude infection with other strains. It is imperative that you get HPV vaccine to prevent infection with dangerous strains. Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs.