Week Weak

Gave my resignation. Ruined my managerโ€™s personal plan and theyโ€™re now trying to make my life hell. How do I not burn bridges?

Just use another person you worked with as a reference and leave immediately. Iโ€™ve been in this situation before and did exactly that. That bridge is already in full conflagration. Pro tip: if someone is burning you now, theyโ€™ll burn you later; the bridge is irrelevant at that point.

A two-week notice is a courtesy, not a requirement (in the US, other countries differ). Get the fuck out. I know American workers have been so crushed they feel like oppression is de rigeur, but at lot of that is like a dog that has been beaten so much it flinches when anyone raises a hand. As someone in the comments said, โ€œNuke that fucking bridge.โ€

Thatโ€™s what I do and itโ€™s never been wrong.