When there is resistance in the mind,rigidity, arrogance and stiffness, it is hard to accept anything. Even if it is the right thing, you will rebel against the right thing. Even if it is the just thing, you will rebel against it due to the rigidity of the mind.
Therefore, you have to learn to deal with the rigidity of the mind. The less rigid you are, the more accepting you become, and the more rigid you are the less accepting you are. This rigidity is an offshoot of ego, arrogance, self-image, self-prestige, self-identity, which exist in a deep and strong form.
At the conscious level, you can allow yourself to accept something but at an unconscious level there will be rejection. The aspects which are associated with ahamkara, ego or arrogance, have to be observed and lessened in order to improve the ability to accept.
Acceptance is not a practice. It is a condition of mind.
26 June 2016, Ganga Darshan, Munger