A bliss ninny noun phrase
Used to describe someone who is extremely happy
She was a bliss ninny when hearing that she passed the exam.
To make someone feel more confident or happy, especially when they thought that they can't achieve what they want
Happy or cheerful; in a good mood
To smile broadly
Used to tell someone not to stress about something
A: I'll help you prepare the dinner.
B: I am really into cooking myself, so don't worry your pretty little head about it.