I do have anxiety from time to time as well, but sometimes I seem to be able to get why. Apart from the obvious stressful situations, dealing with people, overloading, etc, it seems like everytime I relax, my mind comes up with something that worries me and that isn't resolved, thus, anxiety kicks in. Other times I do get increasingly anxious but can't pin point to any particular reason and it is super frustrating. For the worse or the better I have a tested defense mechanism for this cases: (maladaptive) daydreaming. It's good because it is quite effective, it's bad because it is very time and energy consuming, and because it is my go to method, it kills productivity big time, sometimes I can control it, sometimes not so much. Interestingly, the fact that I do excess daydream is another source of anxiety but I still can't talk about it other than in this forum. Go figure, my brain seems to like self-sabotage.