think ahead
To anticipate (something) and plan or consider the necessary actions or steps in advance. I wish I had thought ahead and packed some food to bring with us. We're thinking ahead to the next fiscal year with these investments.
think ahead (to something)
to have thoughts about something that is to happen in the future. I began to think ahead to next year when the same thing might happen. You must learn to think ahead if you want to get ahead.
think ahead
v. To consider or think about the future; think proactively: I thought ahead and brought a snack in case I got hungry.