sign (one's) life away
To forfeit one's rights or control over some integral aspect of one's life, typically one's financial interests, as through some signed deal or agreement. Because our financial portfolio was so bad, we basically had to sign our lives away to get approved for a mortgage with the bank. If you agree to this plea bargain, the government will have total control over your property, accounts, and future revenue—so think very carefully before you sign your life away.