I eat an egg every morning, so if I can crack the egg well that day, it's gonna be awesome.

be mindful of the punctuation mark

Also, a bad sunny side up makes me feel bad.

comma, right article usage

I eat an egg every morning, so if I can crack theat egg well that day gonna be awesit serves as a good sign for the day to come.

Something serving as a good luck charm or good omen is typically said in the way above. I corrected it under the assumption that you eat precisely one egg every morning - if you eat multiple or variable amounts, the sentence would be this:

I eat eggs every morning, so if I can crack any of them super well, it serves as a good sign for the day to come.

Also, a bad sunny side up makes me feel bad.

The correction here is for grammar, but contextually it's a little strange as there's no obvious connection between the previous sentence and this one. If you meant to say that a bad sunny side up serves as a bad omen, then we can correct it like this:

On the flip side, a bad sunny side up serves as a bad omen.