Somebody said there is no simple answer but there is it is a very basicd / cascading effect that simply starts with one bad feeling or bad thought that perpetuates a direct correlation in that direction of continued thoughts.

This is a very good example of why it is important to have a babysitter when tripping, not just so you don't use knives to draw pictures on your skin thinking they are markers or something absolutely psychotic but also to be able to bring you out of a steep fall in case your mind or you're feeling start to perpetuate towards the negative.