sell yourself short

sell (someone, something, or oneself) short

To undervalue someone, something, or oneself; to underestimate or underappreciate the good qualities of someone, something, or oneself. Often used in negative constructions. Don't sell yourself short—your writing is really excellent! I know you don't like their pitcher, but you shouldn't sell him short. He's actually got some of the best stats in the league. I think they're selling this short. It's actually an incredibly good deal!
See also: sell, short
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

sell yourself short

1. If you sell yourself short, you describe yourself as less clever or talented than you really are. We should not sell ourselves short. Our work here is important and we should put a proper value on it.
2. If you sell yourself short, you do things that do not show how clever or talented you are. He's clearly a bright man and yet he sticks with quiz shows. Does he never feel that he is selling himself short? Note: The reference here is to someone being cheated by being given less of something than they have paid for.
See also: sell, short
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

sell yourself/somebody/something ˈshort

describe yourself/somebody/something as being less good, valuable, etc. than you, etc. really are: Don’t sell yourself short when you go for an interview.It was a great idea, but you sold it short.
Farlex Partner Idioms Dictionary © Farlex 2017
See also:
References in periodicals archive ?
Spehar also gave the teenager some leadership tips: "Never sell yourself short, and a woman doesn't have to lead like a man, but with her own experience, instinct and style," she told Xanthi.
Don't ever sell yourself short. To quote Shel Silverstein, "...
They had one role to fill and several interested candidates.With this in mind, don't sell yourself short to get the job, most employers are very willing to negotiate for a good package when they are desperate to hire unlike when you are already on-board, therefore, take advantage of this situation and negotiate the best deal for yourself.
Don't sell yourself short or get involved in something that you know deep down isn't for you.
Additionally, if you rely only on your management line for support, you will sell yourself short.
He has this advice for newbies who want to strike out on their own: "The most basic and most important principle as a lensman, especially in today's digital age, is to never sell yourself short and never be discouraged simply because you don't have the fanciest equipment.
Don't sell yourself short if you believe your condition was from military service.
"I was like, 'OK, I am not quite sure what we are going to do with this ball club; we are not playing good basketball,' but you can't sell yourself short," James explained.
Don't ever sell yourself short. You are doing something truly important.
* Don't sell yourself short. If you think you have a realistic chance of getting a $5,000 raise, then make your aspiration point $7,500.
This week is very much about the world of career and duty, and short-term sacrifice for long-term gain, but don't sell yourself short either.
The first is to never sell yourself short. Second is to quit talking about trying to be your best.
Why sell yourself short? There are enough bowlers and batsmen to show you that you can play all three formats," Dravid said.
The new Capricorn who is emerging is far more intelligent and able, so don't sell yourself short - reach for the stars.
So don't sell yourself short. Instead, use this opportunity to wow him again, up close and personal, with your dancing.