I feel like I could stop feeling depressed if someone could counter these arguments:?

Last time I felt depressed, I decided to write down the thoughts going around my head. I feel like I could control my depression more easily if I could get these thoughts out of my head, but I can't think of a way to argue against them. If you could tell me why these thoughts are wrong, I may be able to control my urges to harm myself next time they occur.

If we knew the world was going to end in one years time, would we continue building skyscrapers?

So why go to the effort of building a life for yourself when it's inevitably going to end? Getting out of bed in the morning is a pointless waste of effort.

Everything we do is just to pass the time whilst we wait for death.

I love other people as individuals, but on a broader scale I feel like the human race is like a colony of ants. We overvalue ourselves - the ability to think does not necessarily make us more important than apes. What makes human life more precious than that of other species?

Consciousness is a curse.

Religion only exists because humans are incapable of dealing with the idea that their lives are objectively meaningless

Human happiness is relative, rather than objective. Therefore, the development of society is pointless, as it is unlikely to effect human happiness. Would it not therefore have been better to have stayed as apes or cavemen?

Why does happiness matter? This sounds like a stupid question, but I cannot answer it. Once you are dead, does it matter whether you were happy whilst alive?