I disagree, feeling that it matters a lot, at least for me. Consider these two sentences:
- I can't drink anymore.
- I have chosen to not drink anymore.
Now, if someone asks you why you aren't drinking with them, which is going to be better for you? Which gives you a better chance of succeeding?
I know that if I had said, 'I can't drink anymore', I would be pretty likely to say, "Well, maybe just a beer". On the other hand, if I were to say, I have chosen etc., that puts me in control. That is empowering.
I think our words have a great impact.