When we are disturbed by something going on in our lives, we will not find peace with that thing unless and until we accept the fact that it is there. Fighting its reality and denying it exists only digs us deeper into negativity and pain.
Acceptance does not mean that we have to agree with the thing. Far from it. Acceptance also does not mean that we are prisoners to the facts either. It simply means we are calling what we see as being a reality whether we like it or not.