I am struggling to cope with his ADHD and nasty moods

My partner has ADHD and other issues, including an explosive temper and depression. He lost his mum five weeks ago, so he's up one day and down the next.

- 

His mum was special to him - the one person he could talk to and who was always on his side. He's missing her a lot.

We have a good relationship when things are going well and a successful small business, which I take most of the responsibility for, but that's OK because I know there are certain things he can't do. ADHD affects his time-keeping, so jobs get put off until the last minute and then stress builds up and he blows his top.

I try hard to aid him in everything so he stays on track, but his temper explodes all the time and I'm in the firing line. He'll ask me for a tool and if I don't drop everything to get it, he'll scream and swear and make a scene, and doesn't care if people are around or not.