If you have to think it, it’s not truly true.
If you haven’t learned it yet, you don't need it.
If you try hard, you were supposed to fail.
If you open your heart, you will die.

If my words should flow through you, you will have a ‘nagging thought’ in the back of your mind at some point, as well as elsewhere.

If you imagine a nice place, you’ll notice its light.
If you look in the darkness, it will feel like the night.
If you feel any feelings, you’ll have felt all there is.
If my hand opens your eyes, I am happy.

Danny, James Archer

http://www.poemhunter.com/poem/if-you-open-your-heart/