I'm incapable of being happy for my boyfriend

So my boyfriend just graduated high school, got his first job, and recently came into $10,000 inheritance from his father. He's more than likely going to use it to buy a used car, laptop, and anything else he might need. He's so smart and got into the college of his dreams with so many scholarships. He gets money from replacing phone screens for people. He's so successful. I really should be happy for him but I'm not. I'm not necessarily jealous, I'm just unhappy. Sort of. I wish nice things happened to me. I wish I was happy for him and I keep telling myself that nice things for him are nice things for me but I can't be happy about it. I just can't. I feel terrible.