Easiest 'poverty' hands down, I've already had many years of practice. And old age has taken care of 'chastity'. Hardest is silence, ain't in my nature.
Could you elaborate on chastity, celibacy is easy, been doing that for a while, but I need clarification before I pick chasity, it as first. But if this means literal in every way, no thoughts or other lone time, then that one will definately be most difficult. I could go without talking or live a povished life if need be, like that's a stretch. ha, ha, ha.