That’s not really what I’m saying. Understanding the causes of your circumstances obviously doesn’t necessarily entail what is in your control or not. However focusing only on the levers you control, while remaining blind to the causes of the problem is just as useless as the other way around. Only by bringing together a clear model of the problem with a rigorous analysis of possible interventions can you really make forward progress in your life.
Heres an example that I think is likely similar to what OP is imagining when they think of “victim mentality”: say I’m a woman in a technical field who is experiencing misogyny in my workplace. I have several levers available to me: I can quit and seek a new job, I can work harder, I can contact HR, I can confront the misogynist directly, I can request a transfer to another team, etc. But if I simply pretend “it’s my fault” I will likely only recognize the first two as viable options, even if they’re not globally optimal (ex. if the misogynist is in charge of promotions simply working harder will likely not result in the rewards I’m seeking). Observe that in this example I am still keeping the control, and I am emphatically not saying “oh well I guess I’ll never get promoted” and accepting mediocrity. But an honest stock-take of the things within my control, and their likely efficacy at addressing the problem I’m facing, 100% requires the realization that I am being victimized by someone.