This is so hard to explain. DH is a very genuine, lovely person but I feel like large periods of our lives are overtaken by his complete inability to switch off from things. When he has something to do, that is literally the ONLY thing he can think about until it is done. If it is something at home he will sometimes get up in the night to do it, not interact with the family whilst doing it, not be 'present' but completely lost in though about whatever it is. I even avoid telling him if things need to be fixed at home for fear of staring this. If it is work related then even if he is physically present, there is no point him being there because he is just thinking about work and how to solve whatever. This is becoming more and more of an issue as he becomes more successful in his career. I have told him he need to find ways to switch off. I make him go and do his hobby (exercise) after work, but even this doesn't seem to help any more. I really need advice with this as I fear it will destroy our relationship.