Related:

• Be careful what you set your heart upon - for it will surely be yours.
  -- James Baldwin, "Nobody Knows My Name" 1961...
• Be careful what you set your heart on -- for it will surely be yours.
  -- James Baldwin, "Nobody Knows My Name...
• Be careful what you take with you into your old age.
• Answer just what your heart prompts you.
• Be careful what you vote for. You may get it.
• His heart was yours from the first moment that you met.
• Her heart was yours from the first moment that you met.