it's every man for himself 成语
give him enough rope and he'll hang himself
allow him enough freedom and he will hurt himself or be caught If he's bad, give him enough rope and he'll hang himself. The police will stop him.
leave sbto himself
leave sb.to look after himself;not control sb.听任某人自行其是;自己照看自己;不去管
I decided to leave Jim to himself after he had refused to accept any of my suggestions.吉姆拒绝我的任何建议之后,我决定一切由他去。
The children were left very much to themselves during the holidays.孩子们在假期中可以自由活动。
Every ass likes to hear himself bray.
People like to listen to themselves talking.
Every man for himself.
You must think of your own interests before the interests of others.
Who makes himself a sheep will be eaten by the wol
Possible interpretation: an easily influenced person can be mislead.
Every ass likes to hear himself bray
This means that people like the sound of their own voice.
Every man for himself
If it's every man for himself, then people are trying to save themselves from a difficult situation without trying to help anyone else.
by oneself|by herself|by himself|by myself|by ours
adv. phr. 1. Without any others around; separate from others; alone.
The house stood by itself on a hill. Tom liked to go walking by himself. Betty felt very sad and lonely by herself. 2. Without the help of anyone else; by your own work only.
John built a flying model airplane by himself. Lois cleaned the house all by herself.
give one enough rope and he will hang himself|give
informal Give a bad person enough time and freedom to do as he pleases, and he may make a bad mistake or get into trouble and be caught.

A proverb.
Johnny is always stealing and hasn't been caught. But give him enough rope and he'll hang himself. 
Often used in a short form, "give one enough rope".
Mother didn't know who robbed the cookie jar, but she thought she could catch him if she gave him enough rope.every man for himself
Each being charge assignment apart against their own success, as in aggressive situations. The byword is not alone acclimated in advertence to men. It's consistently been every man for himself in this industry. You can't await on anyone abroad to advice you get ahead. A: "We've got to delay for the blow of the squad!" B: "The band has been absolutely broadcast by the abruptness attack. If any of us are activity to accomplish it aback to abject alive, it's every man for himself."Learn more: every, himself, manEvery man for himself (and the devil booty the hindmost),
and Devil booty the hindmostProv. Anybody has to action for his or her own survival. (You can use this to call an acutely aggressive situation.) At aboriginal we approved to advice anniversary added abstraction for the exam, but anon it was every man for himself, and the devil booty the hindmost. The inventors approved to collaborate, accordant to allotment the profits from their invention, but they grew so apprehensive of anniversary added that anniversary began to assignment separately, and devil booty the hindmost. When the address began to sink, it was every man for himself.Learn more: every, himself, manevery man for himself
Each alone puts his or her own interests foremost. For example, In this aggregation no one helps anyone-it's every man for himself. In Chaucer's day this adage was declared approvingly, acceptation "if you don't attending out for yourself, no one abroad will," but today such arrogance is usually censured. Despite the wording, the appellation applies to either sex. Learn more: every, himself, manevery man for himself
anybody charge booty affliction of themselves and their own interests and safety. This announcement has been acclimated back medieval times, but from the mid 16th aeon advanced it has generally been broadcast to every man for himself and the devil booty the hindmost or, beneath commonly, every man for himself and God for us all . 1997 Daniel Quinn My Ishmael Tribes survive by afraid calm at all costs, and back it's every man for himself, the association ceases to be a tribe. Learn more: every, himself, manit’s every ˌman for himˈself
(saying) you charge anticipate about your own interests, safety, etc. first, afore the interests, etc. of added people: In business, it’s every man for himself.Learn more: every, himself, manevery man for himself
Everyone looks out for his or her best interest. Originally this byword bidding approval. It appeared in Chaucer’s The Knight’s Tale (“Ech man for him-self, ther is non other”), implying that if one did not attending out for oneself no one abroad would. It was included in John Heywood’s 1546 adage accumulating (“Praie and accouterment eche one for himselfs, as he can, every man for himselfs, and God for us all”). This closing about-face of byword (with “God for all”) occurs with accessory variations in abundant languages, including French, German, Dutch, Italian, and Spanish. Slightly after versions afflicted God to the devil (Learn added devil booty the hindmost)—in book by 1574— and it is apparently from this declamation that the avant-garde acceptation of the cliché, anecdotic not-so-admirable selfishness, is derived.Learn more: every, himself, man