“It’s hard, and I’m just not passionate about it, and I’m thinking of giving up – will you tell me it’s OK to give up, so I’ll feel better about it in the morning?”
It’s rarely about difficulty or enthusiasm. I’ve found that it’s usually about other things, things I can manage, change, or otherwise control.
Read the whole thing. It may change your perspective on why you feel this way, and how you can remedy it.