Sulk over (someone or something) American British phrasal verb
To exhibit a gloomy, sullenly distant attitude or behave in a petulant manner to someone or something.
Kathy has sulked over his husband for forgetting her birthday.
My sister has sulked over me for one week because I didn't buy a new laptop for her as I had promised.
I want you to stop sulking over what happened.
The verb "sulk" should be conjugated according to its tense.
To be satisfied with past achievements and stop trying to achieve something new..
If you rest on your laurels, you will fall behind others.