OK. The Baal HaTanya says specifically that every Yid can be a beinoni בכל עת ובכל שעה. He also says that if a person C”V does an aveira, he is a rasha at that moment. He says that if a person does Teshuva, he is then a beinoni.
Every person has the ability to be a beinoni at all times. Everyone. And everyone is supposed to look at themselves as a Beinoni.
This is poshut if you have any basic understanding of the Tanya.