Repeating from an other topic:
Look at the Sefer Habris who explains that there are 25 levels of neshama. נפש, רוח, נשמה, חיה, יחידה within each there are 5 levels such as נפש שבנפש, רוח שבנפש וכו. Each has a maximum strength. Once we arrive to the highest level of the current neshama by defeating the yetzer hara, the yetzer hara cannot be stronger but it wants to be. So Hashem gives the person a higher level of neshama. So according to this, being a tzadik or a beneni is relative to one’s neshama. It is the maximum or middle for the current level of the neshama.