Still feelin' down...

It's after dinner and I'm still feeling down. I had a nice dinner, masha'Allah, but still, I'm feeling like I'm not doing as good as I should be. While I was cooking it was so hard trying to resist the temptation to nibble... and honestly, I gave in a bit. I would love some tips on how not to nibble while cooking. This is a big problem for me. I made myself drink a big cup of water before I ate my dinner hoping it would help me to eat less. I've just had a rough day, insha'Allah tomorrow will be better.