I struggle with expressing emotions. I feel very detached from others emotionally. 
Im sorry to hear that. Sounds like you have been hurt in the past and have put up a emotional barrier.
rather than an inability or difficulty in doing so, typically for personal, social, or other reasons. In this sense it can allow people to maintain boundaries, psychic integrity and avoid undesired impact by or upon others, related to emotional demands. As such it is a deliberate mental attitude which avoids engaging the emotions of others.
This detachment does not necessarily mean avoiding empathy; rather, it allows the person to achieve the space needed to rationally choose whether or not to be overwhelmed or manipulated by such feelings. Examples
by my fellow citizens.
In such an emotional state, my death may probably lead to nothing. Nonetheless, as I stated at the outset, I feel very honoured to have been chosen to be a member of the Special Assault Unit. It is true that, once inside an aircraft, I am mere hardware, but once disembarked, I do have emotions and passion as I am also a human. When the woman for whom I cared so dearly passed away, I emotionally died with her. The idea that