Verb (5-dan, す, transitive)
1. to put back up; to stand back up
地震で倒れた本棚を立て直した。I stood the bookshelf back up after it fell over in the earthquake.
2. to restore (to former strength); to revive (e.g. the economy); to reorganize; to rearrange; to put right; to recover; to put back on its feet
そこまでいけば立て直せるだろう。If we get that far, we should be able to recover.
3. to make again (a plan, policy, etc.); to reformulate; to revise
今日から予定を立て直す。Starting today, I'm redoing my plans.