As humans we are able to feel a number of different emotions at once. Identifying these feelings can be very difficult and trying to communicate these feelings to another person is even harder.
When one does finally begin to try and talk about how they feel it can seem as though its impossible, as if there were no words at all.
Some individuals have spent much of their life not being expressive and not being able to voice how they feel. Learning to express emotions can be a very scary process and may even seem threatening.
Threatening because one has become so adapt at going through life not noticing their emotional state let alone being able to vocalise how they feel.
Learning to listen to yourself and developing your emotional language takes time. Whilst being in therapy one learns slowly how to talk about what they are feeling.