what is " burn your bridges" ?
"I wish you hadn't been rude to that man just now; he is very important in this town and you shouldn't go around burning bridges."

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Yes, to burn bridges means to leave yourself no way back, or to leave yourself no opportunity to repair damage. It also means to damage a relationship before it can properly start.

For example, you may say to someone that you dont like them right now and you'd rather not speak to them for a few days.

If you hurl abuse at them and tell them you never want to see them again- THIS is burning your bridges, because there is no way back.

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i think create problems for yourself in the future due to your bad  behaviour or a mistake you made.

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You burn the bridges behind yourself. There is no way back. You can't make it undone.

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He burnt bridges in front of him (not behind him) which simply means, as Fofa said, 'create future problems for oneself'.

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maybe to start a new life