Over the last week or so I have been able to identify a recurring sequence of thoughts around the times that I am falling asleep and in the first moments when I am waking up. I feel absolutely negative about everything and the thoughts are absolutely convincing while they last, but they last only a very brief time (under a minute or so I think). Things like sensing imminent death everywhere, finding problems with future plans then taken to mean some proximity to dying, imagining various situations where I will somehow be killed before I can change things to allow some joy into my life, etc. Does anyone else experience anything like this around the time that they are waking up or anything? Any ideas for causes? I have started to think it just means I am excessively worried about whether my plans are adequate or not, and that improving them will get rid of those dreadful feelings. Any ideas or suggestions?