<human>: Condense the text into a few key points

Not sure if this is the right place to put this. I have been with my boyfriend for 18 months now. Just a few months after we got together, a very loved member of his family died. We are still dealing with the repercussions today, however, a conversation we had a few nights ago really brought home to me how badly it still affects him.

He is always tired and has been for pretty much the duration of our relationship. The first problem is that he has a health condition which causes him to be more lethargic and need more sleep than others - not much we can do about that. Another problem is his diet - we both need to work on that and we are taking steps to eat better. However the other problem is that he stays up late most nights because he is afraid to go to sleep. He has an irrational fear of death that he just cannot get over, especially when it's time to go to bed and he can lay awake and think about it in depth. His family member's death may have brought it on or worsened it. He says he hasn't had a good night's sleep in about 2 years.

I don't know how to help him get over what we both know is an irrational fear, and that worrying about it won't help anything. I was once irrationally afraid of death too, but life experiences led me to accept it. But there is nothing I can say to him to give him those experiences.

It would improve his quality of life tremendously if he could be refreshed after a night's sleep. Being constantly exhausted affects every part of his life and there is nothing I want more than to see him get better. My thoughts are a visit to the doctor to rule out any other physical conditions (i.e. diabetes, chronic fatigue) and then to a therapist to try and resolve his fear. I'm not sure how he would take the therapy option, and I have my own reservations about therapy, but we have tried everything and at this point I would do anything to help him.
<bot>: boyfriend has trouble sleeping due to physical condition, but also because of very strong, irrational fear of death. Want to help him. Thinking of therapy. How to go about it?