There are a few reasons why people with BPDm in particular, have trouble accepting emotions, although it is imporant to note that everyone has trouble accepting emotions sometimes.

First, people with BPD are often raised in emotionally invalidating environments. These are environments where feelings are not accepted. Sometimes people with BPD were punished for expressing feelings, or sometimes they were told that they were weak for having feelings. This can lead a person with BPD to have trouble accepting their own emotions in adult life.

Second, people with BPD experience very intense emotions and this intensity makes it harder to accept those emotions. People with BPD will often describe feeling that they are afraid their emotions will “overwhelm” or “destroy” them. As a result, many people with BPD feel very afraid of their emotions and are convinced they cannot tolerate their feelings.

It is important to make the distinction between acceptance annd resignation. Accepting emotions does not mean that you resign yourself to always feeling terrible or wallowing in pain. It also doesn't mean that you hold on to painful emotions or try to push yourself to experience emotional pain. A...