Harley, calm down, take some deep breaths.
First, from the home screen go to menu, settings, Language and Keyboard, and make sure to check your preferred keyboard.
Next, open up a text box somewhere, text message or whatever. Click and hold inside the text box. A box should pop up. Click Input method and then select your prefered keyboard. You should be good to go across all text input areas until the next time you accidentally change something without realizing it.