You might have a zinc deficiency. If you have low zinc levels you'd develop very picky taste buds and any food that doesn't have high levels of zinc would taste bland, like cardboard. You might try...

Thank you for your thoughtful response. I really don’t want to stay this apathetic, but I haven’t put that much effort into changing. I will try your suggestions of challenging myself. Thanks aga...

No, it's not because I'm angry, it's more of a giddy feeling, but it is related to stress, i.e. I feel more homicidal when I'm stressed, but not towards any specific person or with any anger, as I ...