So I have your typical, anxiety about anxiety here. 

My other half quit his job last year to go full time with his company. He is an incredibly hard working person even when he was in his previous role which he hated - for which I respect him tremendously.

Starting off on your own like that is stressful and it certainly was for him. He was sleeping badly, his skin flared up etc. All the usuals. They had a launch date in Dec that had him working 9am-2am every day for about three weeks. This was all whilst working from home so he never went outside.He has of course been grumpy through his time and has experienced his own anxiety issues here too.

This whole experience has left me walking on eggshells. I was coming home after work not knowing what to expect. I wanted to help him but I had no idea how. He was experiencing moments of helplessness where he was just angry he wasn't where he wanted to be in his life. This hurt as I felt our relationship hadn't been counted here.

He went home for Christmas and I think the short break was good. But I am a mess now that he is back. I cant sleep tonight so I came through to the sofa so my tossing and turning didnt disturb him but it has just made it worse. I heard a thump and went to check and he said he threw a pillow. I asked if he was annoyed with me and he said yeah, sorta. I am now 100 times worse probably now. 

I wanted to approach this as I can't keep living like this. I also genuinely want this to get better for the sake of our relationship. But I am terrified I approach this wrong and I impact his mental health. I can't help but feel it sounds as if I am blaming it all on him but I also do need to be frank here. 

Advice? How to approach?