in which I finally reach the end of my advisor's patience

I just had a meeting with my advisor in which he finally told me my experiments suck and I need to work harder. He said it very nicely, but still. I made it through without crying, but I'm supposed to go back after I've finished an experiment and go through my crappy plan for what to do next. I'm pretty sure I won't be so successful at holding the tears at bay then.

I feel awful, because I know everything he said is true, and he should be a lot more mad at me than he's acting. I don't know what to say, though. Actually, that's a moot point, because I can't say anything. But, is it worse to let him think I'm stupid and don't know what I should be doing or try to explain that I have no motivation? I suppose the lack of motivation is largely due to the fact that I do think I'm stupid and don't know what to do, anyway...

It would probably be better to spend the time left before the meeting trying to come up with something vaguely intelligent to say about my plan, but instead I'm distracting myself from doom-laden thoughts by reading blogs.

Update: I over-reacted, apparently. I didn't even come close to crying and my advisor didn't hate my plan. I still feel like he should have yelled at me for not working hard enough, though. He also didn't tell me exactly what I should do next, which I kind of wanted, but I guess that means my vague list is okay. I did at least get him to admit that the hypothetical version of the paper he keeps telling me to outline has no actual point yet, so it was reassuring to hear that I could stop squinting at my crappy outline like a magic eye picture, waiting for the 3D central hypothesis to jump out at me.