Rage, panic, depression, anger, anxiety, hostility, guilt, impatience, judgementalness, shame, and an array of self-defeating behaviors. Whatever you are feeling, you really should be feeling because those feelings are flavored by your filters. Filters can be adjusted. Denying, ignoring, and rationalizing away reality blocks acceptance. Sometimes we don't want to accept reality because we believe it's too painful.
People can accept emotional pain by accepting and experiencing their feelings.
Acceptance does not rule out committing yourself to changing your circumstances if you can. Clarity and acceptance are directly related. You increase one and the other increases. Sometimes denial, disbelief, anger, and depression occur in stages before acceptance is reached. Grieving sometimes happens this way.