God’s throne, we are reminded in Hebrews 4:16, is a throne of grace, not a throne of judgment. This means that if we come into His presence through the blood of Christ, we are acceptable to Him. God doesn’t scrutinize us to screen out unworthiness. He extends a hand of welcome.
How much confidence do you have when you pray? I have lots but not because I’m self-confident. I’m God-confident because I know He is faithful and wants good for me.