(Sorry if this isn't very good feedback, I'm relatively new to offering feedback on other people's poems and poetry in general.)

This is very good work, in my opinion. As others have said, I loved the metaphor of the lake, as well as the double-edged sword. You did a wonderful job of expressing the inner turmoil we as human beings can experience when being open and honest with others, something that can land us not only in sticky situations but also potentially hurt the ones we love, and that honesty with others starts with true, authentic honesty with ourselves, something which can be just as, if not more difficult and painful. I'm very happy I read this today.