As known in Elul, anyone can approach the king.

The yetzer hara convinces you that you have the biggest challenges you can't overcome. Look in Tanya, Chapter 26, etc. In general, too much self-examination does not bring benefit, neither physically nor spiritually. Part of it is imagination, and part is exaggeration. https://www.torahrecordings.com/rebbe/igroskodesh/011/012/3776