So much effort and planning, and it's all come to nothing. 费了那么大劲儿,花了那么多心思,却一无所获。
Requests to several countries for asylum have so far come to nothing.
He had several ideas for new inventions, but we all knew they would come to naught.
Hopes that the two sides might reach an agreement have come to naught.
All my good intentions about reading up on the subject before her lecture came to nothing.
See also: come to something