Acceptance of a situation is not giving in or giving up, it is the realization that not all things are within our ability to change. Accepting the things we can not change frees our mind and changes our focus on to the things we can change. The trick is learning what things are changeable and which things that are not. Even when we face situations we can not change, we still can chose how we react to them and even change the outcome of such events to a more favorable one. We are never completely powerless when it comes to life, we may feel overwhelmed and helpless but there is always something we can do to direct the final outcome. A good example is a thief who has been caught and faces imprisonment, he can either lie and deny his guilt or he can be honorable and admit his guilt. Sure he will still face prison time but he will do so with some honor intact. Also during his time served he can either just wait it out doing nothing or use that time to improve himself. Be it a spiritual, physical or mental improvement matters little. Using the time he has to improve himself will bring a far better outcome than to sit there doing nothing in his jail cell. If he does nothing while there he will probably return to the life of crime only to either wind back up in prison or worse. I guess it is like the old saying “if life serves you lemons then make lemonade”. Make the best of every situation, look for any and all ways to take a bad situation and turn it into one that will benefit you and/or others in the end.
It is not necessarily who you are in life but how you live life that matters in the end.