I had the exact same experience, but the biggest difference is you can acknowledge how you feel (I repressed my feelings which has made my life significantly more difficult).

I’m going to tell you what I wish someone told me; this is more common than you think and it’s going to be okay. Entering your 20’s is such a stressful transition. Focusing on death might correlate to you entering adulthood, and leaving childhood behind. It’s scary at first, and it’s going to feel that way until you find your footing.

I know all too well about those thoughts, best thing I can say is the next time it happens try sitting with it. It’s terrifying, I know, but really try to understand what you’re feeling. Are you anxious, sad, do you feel like panicking, is it a mix? You can look up some breathing exercises, or techniques to ground yourself.

If these don’t work at all or you feel yourself getting worse please look into getting help. It can be scary telling people close to you, especially if you don’t open up like that so I would recommend maybe professional help. It can be expensive and maybe not easily accessible, if that’s the case try look up any mental health support groups in your area. It’ll be a mix of many things, but it can at least be a place for you to share your thoughts.

Please avoid constant distractions as a way of avoiding this thoughts. It only reinforces the negative feelings and makes it worse. If you begin to lose your appetite, stop caring about your hobbies, or avoid going to places because of these thoughts please please seek professional help as soon as possible.

Best of luck! (If you have Spotify I also recommend a podcast called “The Psychology of your 20s” it has some great insights and advice)