Do you realize the situation in which you find yourself is yours, no matter how it came to be, no matter who may be to blame? Yes, if you could reverse the direction of time, it might be useful to assign blame.
Yet, your time only moves forward. No matter how precisely you analyze and reconstruct the past, the way to move positively ahead is to take responsibility. Why? Your past will keep you from living your life.
Beginning today when you truly desire to move forward, assigning blame won’t do it. Instead, your best strategy is to begin to take responsibility. How? Let your thoughts and actions be focused in that direction.