We know you don't clean your clubs like you should, and it's costing you strokes. Leaving dirt and grime in your grooves alters the spin of each shot. This means you're guessing about how your ball will react when it hits the green. Will it check up or roll off the back?
Just by cleaning your grooves before each shot, you can expect higher spin rates and more control.
Take care of your tools and they will take care of you. This is true of your golf clubs too.