ill say i went through this when i was in college about 6 years ago all i can say is that i learned that whatever outcome i did not want fear produced a feeling of certainty about that reality when i started to look at how uncertain pretty much everything is it made me realize that i just cant be certain about much and i gained a modicum of acceptance as i began to accept these things more the fear fade and so did the feeling of these unfavorable outcomes being certainties  tldr - im pretty agnostic about just about everything now and this kind of stuff doesnt bother me  x200b  for what its worth ill address how i feel about your concerns   am i dreaming - it sure doesnt seem like it david chalmers has some interesting work on this that i imagine would be of use to you  reality is a simulation - same as the first one using the word simulation from my pov is only saying that the fundamental nature of reality is different than we suspected we used to have ideas about matter and now we realize its mostly empty space again chalmers has great information on the irrelevance of this question  am i the only conscious being - this one specifically used to bother me the most its just as likely that panpsychism is true vs solipsism or any other theory of mind i personally find dan dennetts materialism pretty compelling against this problem i find this concern seems to affect people who had a dualistic view of consciousness growing up not always the case though what really helps was wittgensteins private language argument  beetle in the box thought experiment language doesnt make sense without other minds if somehow other minds were a creation of your own and your mind created language who is to say your mind didnt create awareness for them as well again i recognize the ocd makes it difficult to accept these arguments but they are helpful or they were to me anyway  is the universe only in my mind - this is pretty much a rephrasing of the question above  thoughts of free will - compatibilism is where i stand on this one although i dont find the notion of absolutely no free-will particularly troubling i think formerly religious people definitely trip on this one quite a bit  what is time - i dont have opinions on this  what is reality really - this is a more general question of some of the others above in some sense it doesnt matter to me what reality is really  is there a god if so where did they come from ive always been an atheistic leaning agnost - i doubt it but im agnostic as well  as you can see from my responses my underlying change in mindset was largely from acceptance of ambiguity and recognizing a lot of my questions were word games  ps - i would consult with your therapist or perhaps get a better handle on your obsessions first but for me reading more philosophy also helped i realized there were a million takes on pretty much every question some that i liked some that i didnt in a weird way this quieted my obsessions because i realized that the only rational position is agnosticism i care for you internet person never give up