The West Yorkshire side are only 12th in the current Championship table, eight points off the play-off places, and some Leeds fans called for Warnock's removal during Sunday's 4-0 FA Cup loss at Manchester City.
However, Warnock still thinks a play-off spot is achievable and says every game until the end of the season will be hugely important, beginning with the visit of Blackpool on Wednesday.
"I won't be here next year if we don't get promotion," said Warnock. "So it's not rocket science, we've got to keep looking at the picture and going for it in every game now.
"Blackpool's important and then we've got another tough one at Blackburn on Saturday. The next three or four games are vital really, we've got to get some points on board to give us a chance to get up there.
"I have spoken to the owners about the future. I've said all along that I want to get promotion and nothing has changed. If I don't get promotion I won't be here next season, so I can't be fairer than that.
"It's not like I've signed a 10-year contract. I didn't want a long contract, I just wanted one year to have a go at it and, while we've got an opportunity, we've got to give it a go.
"We haven't had the consistency that we have needed but we have had opportunities to be up there, so it's our own doing and we've just got to get on with it now."