Some coping advice

So on day 5 of isolating and the person, who was the only one keeping me sane, I have somehow managed to upset and they won't talk to me anymore.

They are the only one who knows what is going on in my mind and now I don't have that support, I have people who know that I have self diagnosed at the moment and through work started the ball rolling with some assistance but none of them have that much of an idea what's going through my head!

Does anyone have any coping methods to keep calm and not fall into a low point?

***EDIT***

Now they don't want anything to do with me!! I am a bit lost as I confided in them, I don't know how I pushed them away?