How do I be happy?

I really don't know what to do in my life as I've felt this way a long time. I dont have an amazing job, I'm not great looking and I dont have a great body.
I'm completely average in every way so I'm not that noticeable.
I have no ambitions or aspirations in life so I don't really know what to do with it.
I'm 25 and I live in my own house and I have some friends , never had a girlfriend and many girls just seem to play with my head.
I just seem to just work eat and sleep so I have nothing else. Is there any way to be happy.
I'm 25 and everyone else has went so much further than I have , I still feel like a child not a man
How do I be happy?
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