All I can say is that my wife 'just knows' when to keep her distance from me.
I'm not someone who gets angry or mad, the opposite in fact. But somedays I just go quiet and withdrawn and she backs off, and so do my close friends.
I don't retreat into a shell and hide, I carry on with my life but quietly, and they now ask or comment about my welfare, and that's fine with me.
But they realise that 'today' I don't want to be pestered with questions or something that can wait.
It's not often now, and it's also something that I recognise early on so I can tell people as well.
It seems to work.
Go confidently in the direction of your dreams! Live the life you've imagined. As you simplify your life, the laws of the universe will be simpler.
Henry David Thoreau