作繭自縛

- in a cocoon around oneself; be caught in one's own trap; cocoon oneself like silkworms; fall into a pit of one's own digging; fall into the cocoon set by oneself; fry in one's own grease; get enmeshed in a web of one's own spinning; hoist oneself with [by] one's own petard; make a cocoon to shut oneself in; put a noose around one's own neck; spin a cocoon around oneself -- to get enmeshed in a web of one's own spinning; tie oneself up with ...; weave a cocoon and get imprisoned in it; wrap oneself up in a cocoon