Definition of "if the shoe fits, wear it" in английский

Proverb

1. If a description fits, it is probably the case; if an insult accurately describes you, you must bear it; if you take offence at an insult that was only implicitly directed at you, you admit the insult is true enough to be recognizable.

2. (Can we verify this sense?) If it works, there is not a problem using it. Often a response to being judged when using an incorrect tool.