Is this mindset unhealthy? I'm only 16?

I can only think in one perspective, it's hard to describe and this may come out completely inaccurate to how I actually feel but oh well, it's a long shot. I wake up and immediately I loose motivation to walk out of my bedroom to face the day ahead, I normally end up in a loud disagreement with my mum. It doesn't help that every living moment I'm constantly being told that I'm depressed. I know I'm not sad, I'm just tired of not looking forwards to the next day but at the same time I have a nice life, I have the bestest friends, I have a wonderful boyfriend and a home to come to at the end of the day. I get good grades, but for some unknown reason I just can't seem to be happy and I feel guilty for not feeling content with what I have. Being alive should be enough. But unfortunately I can't see myself doing anything else but working my **** off for the rest of my life, for the government, it's ridiculous to deduce from an illogical situation that I would end up with a dead end job or married for example. I do not know if I will end up married or even employed, we do not know our fates but I wish, I wish I could be happy again.