When you're learning to ride a bike, you fall many times. The difference between someone who learns and someone who gives up isn't who never fell, it's who gets back up after every fall.
The Bible says the righteous can fall seven times, but they always get back up. Seven is a way of saying "many, many times." Falling is part of it, what matters is getting up.
Think of a day when you messed up badly, a test that went poorly, a fight with a friend. That doesn't make you a bad person forever, it's just a fall. What decides who you are is whether you get up and try again, or stay down on the ground.
Jesus died on the cross, and it seemed like everything was over. But He rose again, proving that God always raises up those who trust in Him. If Jesus rose even from death, He can also help you get up from your stumbles today.
It's not about never falling, it's about always getting up.