Thoughts about death and how to deal with them
I've been having problems with constant recurring thoughts - I've got mild depression, things are going OK though, I've been on medication for a couple of months, which has helped stabilize me, but my main issue at the moment are thoughts about death. Around Christmas time someone I vaguely knew (a friend of a friend) died, and I wasn't particularly grieving for him or anything, but I started to think about death for a few days. It went away, occasionally came back, and now it feels like it's engrained into my mind. It's also coupled with these thoughts about pointlessness, like for example, "what's the point in doing anything if you're going to die and not remember any of it?" Every time I do something, like watching a movie for example, my mind goes "why watch this if you're going to die one day?"
I realise these sound like suicidal thoughts, I haven't actually had any, but I'm really worried that I might start having them at some point. I'm also fully aware that these thoughts are kind of ridiculous, and I never used to feel this way before I was depressed, didn't even think about death at all either.
@vaughanography Hello 
I'm sorry to hear that you have been having such troubling, constant thoughts lately. I think it's normal to think more about death after someone you know passes away, even if you weren't particularly close to them or weren't hit too hard by it. And once something starts going around your head, it's easy to get it stuck there, and just keep popping up again. And it doesn't really sound ridiculous at all.
To me, these sound more like existential worries/questions, rather than strictly suicidal ones (as in, suicidal thoughts can follow this pattern, but doesn't necessarily mean that's what these kinds of thoughts are about). But, I can understand your concern about having the potential for them to start becoming more related to suicide.
About the thoughts themselves...there's not really an easy answer to them (I mean, that would essentially be answering the big question "what's the point of life"). For me when I have thoughts like this, I try to re-frame them. So, if I think "what's the point in doing this if I'm going to die anyways", I follow up with "well, that's exactly why I should, since this would be the only opportunity I have to do it". Not everything in life has to be so important or meaningful or have a real point to it, in order for it to be good or nice to do, you know? If this is your life and it will end one day, why not do what you can, while you still can? Even if you are gone one day and lose all your memories, it doesn't mean "you" are completely gone. You will have made an impact on people, on different parts of the world. What's the point of watching a movie? Well, maybe it will be a fond memory for someone else that you were with. Or, maybe it will evoke questions or emotions in you that you share with someone else, that they then pass on to someone else, and so on. I feel like even the most pointless things still have a point, because, well, you're doing it, that's the point. The fact that you are alive and are able to do it.
I know those kinds of things don't always fully get rid of the thought, but I've found it helps for the most part. Sometimes you just have to ignore that voice, what's the point of thinking "what's the point" if it's not going to change the fact that you are alive and you are doing these things? 
Ah I hope I made at least some sense there haha