Sentence:  Everyone is ambivalent about his profession , if he has practised it <WSD>long</WSD> enough , but there were still moments when he loved the stage and all those unseen people out there , who might cheer you or boo you , but that was largely , though not entirely , up to you . 
Meaning of the word marked with <WSD> tags:  primarily temporal sense; being or indicating a relatively great or greater than average duration or passage of time or a duration as specified