Feelings aren't facts. Modern psychology likes to tell you to validate other people's feelings or for you to expect that from someone else. But it's not helpful.
There's a major difference between acknowledging a person is really having a feeling or emotion and telling them it's true. Just because it's present doesn't mean it's accurate.
By trying to claim it is, you aren't able to move past whatever issue is there. You aren't building the necessary skills to recognize a faulty thought process so you can stop it and redirect to a more productive internal and external dialog.
No excuses!