These words and more like them have a “quitting” action built into them. Saying them gives you an automatic out, an escape route for not reaching your goals. “Well at least I tried” is not the same as “I’m going to.”
Get your going by taking deliberate action. When you change your vocabulary, you will change your life.
A simple way you can start and spread this kind of momentum based thinking is by changing a bit a phrase you are probably saying everyday. Instead of saying “Have a great day” – which leaves it up to chance. “Make it a great day” and give yourself the power to create the best day possible.