Older person with Existential OCD

OCD has decided to latch onto my religion (Christianity) and I find myself doubting my belief in Jesus Christ. Yet when I research, I even find myself doubting the atheistic and agnostic approach as well. I’ve been a Christian since I was 13, growing up in a non-Christian in truth but nominally Christian household. This is rough. Any advice?

I have had anxiety episodes on and off for most of my life, and when I was 28 I went to the doctor's and was diagnosed with GAD. I'm currently in therapy as well. But sometimes I wonder if my GAD is actually Pure OCD. One of the main themes of my anxiety at the moment is the fear of death and dying. This is how my thought processes typically work: I'll see someone (eg my parents or other family members), and then I think about their age. If they are old, this sets me thinking morbid thoughts, eg worrying that the person may die within a few years. If they are younger than me, I feel sad that I'll never be that young again. Then it sets me off thinking about how I myself am getting older. Then I worry about how I'll feel when I'm older. For example, I think "when I'm in my 70s or 80s will I be constantly worried about dying?" and "will I be able to enjoy myself when I'm old or will I be too worried?" (Here I'm actually worried that I'll be worried when I'm older - ie I'm worrying about worrying!) I then think how sad/disappointed I'll be if I don't get to do everything I wanted to do during my life. I also worry about what happens when someone dies (in the spiritual sense). I do believe in heaven and spirits, but being a scientifically-minded person I do sometimes get doubts about it, since it is difficult to believe in something when there's not much concrete evidence. The doubts make me feel worse. When I try to ignore these negative morbid thoughts, I then get a nagging feeling saying "doesn't it bother you that you and your loved ones will die one day?" and then the fear starts again. I also sometimes feel guilty about having these morbid thoughts, because it's bad to think about your loved ones dying and yourself dying. It also makes me feel that because I'm so scared of dying, I'm being ungrateful for life. But in reality I am grateful for life and I want to be able to enjoy it without these intrusive negative thoughts. I worry about the speed of time. For example, I can't believe the first 2 months of 2025 are nearly over! I worry "will I get old before I know it?" and "will I be dead and buried before I know it?" Even when there's no specific trigger, I can feel the existential thoughts in the back of my mind all the time, even when I'm doing things I would usually enjoy. I am autistic, and because of that I feel emotionally and mentally younger than my real age, like age dysphoria. All my life, I have felt younger than my real age, even in my childhood and teenage years!

the concept of death & existence is ruining my life rn 😭 im losing so much sleep. i try to close my eyes & all my brain wants to do is try to wrap itself around the idea of what not existing feels like & i get this sinking feeling that grows & grows until my eyes snap open & i have to go back on my phone to distract myself until im literally too exhausted to keep my head up & my body forces me to sleep. it makes having the motivation to do anything hard because all i can think is "it wont matter when i die". it sucks because i know that having MORE in my life might actually improve this, im 21 unemployed still living at home with ASD & i know once i have a job that will definitely give me more to focus on & other stresses to have lol, but i feel like im stuck in the endless cycle of "not having a life makes me worried im wasting my life & itll all be over so fast" & then "being so stressed about my life & time passing is exhausting & makes it too hard to find the motivation to do anything other than sit here" & repeat. spirituality is hard because i like thinking that way, like afterlife & shit, but i worry that im just "in denial" & using it as an unhealthy coping mechanism that leads to magical thinking thoughts. then its like i have some sort of meta ocd spiral obsessing over if what im doing is bad & unhealthy for my ocd or not. i LIKE being spiritual but im worrying im hurting myself & doing a compulsion thinking that way. it also doesnt help that religious spaces have hurt & traumatized so many people & im terrified of being apart of a "delusional" community that spreads a false narrative & attacks anyone that doesnt agree with them. i know i am not like that but i worry im still apart of the problem even thinking this way. at the end of the day no one knows the truth, no one knows what happens after death. im just struggling to sit with the uncertainty. it is so late rn idk of any of my words make sense lol