Todays going to be a good day

Something a person says to trick themselves into thinking the day isn't going to turn out horribly. It will. No one can stop it. Not even steve.
Or used for sarcasm when something bad happens to lighten the mood.

*yawns* 'Todays going to be a good day' -dog shits on the bed-

good idea day

a day of lots of very good ideas. can happen on any day.

"I just came up with all these epic new ideas to bring into this story I'm writing. Safe to say I had a good idea day."

totally good day

Neo-Nazi dogwhistle that stands for total gypsy death

John: have a totally good day
Richard: get away from me nazi