Something is increasing, but I don't like, why?

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You may be glad to see that the digit in your saving is increasing. However, I don't think that when the age is increasing, I am depressed. Why? One day older means I'm one day closer to the gate of death. It's terrible. May be I've thought too much but I do worry that when the world (of mine) ends, I have done nothing, and nobody would ever think of me. ( that's why my friend said that I am lack of the sence of existence, does that mean I am daydreaming?) I am 20+ is that too to start doing anything?