you('ll) never know till you try

you('ll) never know till you try

1. It is not possible for you to know whether or not you enjoy something until you try it for the first time. A: "Yuck, I don't like peas!" B: "You never know till you try. I bet you'd really like them!" A: "Those romance novels are so stupid." B: "Have you ever actually read one before? You'll never know till you try."
2. It is not possible for you to know whether or not you can do something until you attempt it for the first time. A: "I've always wanted to write a novel, but I'm not a good enough writer for it." B: "Why do you say that? You'll never know till you try." A: "I think I'd be too nervous to sky-dive." B: "Just go for it—you never know till you try!"
See also: know, never, till, try
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

You never know (what you can do) till you try.

Prov. Even if you think you are not able to do something, you should try to do it. Jill: Want to go rock-climbing with me this weekend? Jane: Oh, I can't rock-climb. Jill: How do you know? Have you ever tried it? Jane: No, not really. Jill: You don't know what you can do till you try. Alan: I'll never be able to learn to dance. Jane: You don't know till you try.
See also: know, never, till, try
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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