Burn your Bridges/Boats:

To do something with the result that you will not be able to return to a previous situation again, even if you want to.

I’m really tempted to take up that job offer in Washington, but I don’t want to burn my boats with this company.

If you insult the boss when you leave, you'll be burning your bridges and you'll never be able to go back to work there again.

I knew I'd be burning my boats if I dropped out of school, but I didn't care because I was determined to be a photographer.

Persian: پل های پشت سر خود را خراب کردن