Just as in business, assessing how your business is doing is best at the end of the month or year.

Similarly, with Torah, there are special times to make an accounting, such as before going to sleep, at the end of the year, during Selichos, etc. Hashem gives you the ability to do all of His mitzvos. Don't doubt yourself. You are saving the lives of those lost in the wilderness. https://www.torahrecordings.com/rebbe/igroskodesh/011/008/3481