These are the reason why we must assess ourselves:

1. To ascertain where we are per time and the grounds we have covered.

2. To avoid self-deception and delusion about our journey and not think we are doing fine when we are not.

3. To discover areas of misalignment and quickly correct ourselves [recognizing our shortcomings and correcting our behavior] 1 Corinthians 11:31

4. To avoid falling short of required standard of God in every new season

5. To avoid judgment or condemnation on the day of Ultimate Judgment of God

Every time we carryout honest assessment of ourselves and realise gaps, we are required to quickly make amends and keep moving.