Vision: It gets clear what you write about. Somehow you wish to be understood, especially by people who are very close to you; that might make you feel less alone. But then you think about what they would have to comprehend - and you realize that this is so excruciating that you want to spare your friends the pain they would have to go through, just as you say in your poem.
Originality: The basic idea is the attempt not to burden the people you love with your own problems - an idea that occurs from time to time, but that is not overused.
Technique: It is a very short and very simple poem, outright and precise. Nevertheless, you say all that has to be said. The first line stands in contrast to the rest and seems to express the misery of not being understood. You leave open what shall be comprehended at all, which makes the poem fit so several situations. Your text can be easily read, but something still bothers me a little, although I can't make out what it is. Maybe you could have decided on 'd or on would instead of using both, and you could have used small letters to begin the lines that start in the middle of a sentence. Just to make it a little clearer...
Impact: The poem is appealing and deals with an occurrence several people might know. I am not sure how persons who are not used to the situation you describe will be affected, but if you have been in similar circumstances, the lines are very familiar. And without using many words, you encapsulate everything crucial.