It is not a question of whether or not you will fall, the only question is when you will fall? Notice that according to Proverbs 24:16, if you are a just person, you get back up. You’re going to fall, you’re going to mess up, make mistakes, and blow it big time! What you need to know is that your failure is not final!
Trust God. Pray every day. Seek after His guidance and wisdom. The Bible tells us not to trust in our own understanding, but in all of our ways to acknowledge Him and He will bring it to pass. If you will trust God, and allow Him to be your strength you will find out that your failures are not final.