These are the triggers for me that I have to avoid at the moment:
News
Any program on TV that has a discussion concept (people sitting around arguing)
Any program where suicide is a big part
People who are abrasive and aggressive online, always getting their knickers in a knot.
Anyone online who assumes I’m stupid.

I try and surround myself with sunlight and rainbows. Once I’m unwell it’s a long road back.