would have failed
If it weren't for your advice, I would have failed.
もしもあなたの忠告がなかったならば、私は事業で失敗していたでしょう。
If it hadn't been for your advice, I would have failed in business.
あなたのアドバイスがなかったら、私の試みは失敗していたでしょう。
Without your advice, my attempt would have failed.