I believe, this acceptance is such a big part of life, be it situations or people. The only control we have is over ourselves, over our thoughts and actions. External factors are rarely under our control or rarely remain controlled. In such situations, patience and stability of mind brings acceptance of the situation. I have learnt it from my past experiences, acceptance is not momentarily, it should be forever. For example, if I do not like somebody's behaviour, I have to accept this fact not only today and tomorrow but may be for weeks/months/years to come. If I accept it today and not tomorrow, I am again in the same situation the very next day. I lose my peace of mind, rationality and dignity. All this because I didn't made acceptance the integral part of my life with respect to a situation or person.
One more thing I have learnt, acceptance is without anger. It is always absorbed with patience, maturity and courage. It is not the quality of the weak. It is only the strong who are strong enough to accept something in real meaning. I always become happy when I re-live this lesson in my life and often accept the situations/people as they are. But I doubt, many people will argue this as a weakness and running away from battling with the situations or people. I have an answer to them, NO! Acceptance is not blind, it is a mature decision, a mature thought and a mature action. It is not taken in anger, it is full of patience. It is hard work to accept something/somebody as they are. It is never easy to accept but it is always easy not to accept. Therefore, acceptance, in real terms, for me is never escapism, it is hard work whose fruits are my peace of mind and joy from things/persons who can make it otherwise.