DL is keen on word-order. Basically, you have to follow the word-order as long as it's correct in the language. Moreover, even if the sentence has the same meaning, it's stylistically different. In one sentence, you emphasize the fact that it's not possible, and in the other, you emphasize the fact that it's your opinion.
- It is not possible for me = Ce n'est pas possible pour moi
- For me, it is not possible = Pour moi, ce n'est pas possible