Hi Isabelle
I think you should ALWAYS phrase objectives in the positive, for any paraliminal, or any goal setting. The way minds processes negatives puts the focus on problem states, not on goal states. By framing things in the positive, a mind can focus on the desired outcome and find ways to achieve it.
ps
We have had an uncharacterstic amount of snow here on the west coast- but I hear it has been BRUTAL back east....I don't miss the winters in Quebec!
vitaman