You Can't

If you think you can miss or mess up God's plan for your life, you either think way to highly of yourself or think too small of God.

Either way, you are gravely mistaken.

You are just not that powerful.

HE IS.

James 4:10

[10] Humble yourselves before the Lord, and he will lift you up.

Faith in God is the opposite of faith in yourself.

... and no, beating yourself up is not trusting Him. It is you believing you can make yourself better or worthy.