don't give up the day job!
US /doʊnt ɡɪv ʌp ðə deɪ dʒɑb!/
UK /doʊnt ɡɪv ʌp ðə deɪ dʒɑb!/
1.
used to tell someone that you do not think they are very good at something
:
•
Your singing is terrible, don't give up the day job!
•
He tried to fix the car, but it was clear he should not give up the day job.