how do i actually get particles to stick in my brain??

Okay so I REALLY need to figure out how to lock in these participles because like wa and ga are literally the bane of my existence. I tried reading real articles about youth or like personal growth but then I got distracted by some forum about stomach health?? wait what was I saying. Oh yeah! how do you guys practice them in real life sentences because my brain just melts when I try to write a letter of application o