Realizing that I can push harder to see growth and progress

Being an avid gym goer, I recently realized that I have been stuck at the same weight for a few months. I was confused at first, then I seek advice from my friend who also goes to the gym, and he gave me advice on how to actually progress, by increasing the weight after I hit a certain number of reps for any exercise. Using that method, I realized how much heavier I could do and that I can push harder with more weight and feel stronger for myself. Hence, I am thankful for my friend and I am very happy that I can see my own progress through my own hard work