As a character trait, humility is elusive, and often misunderstood. Often confused with 'humiliated', which can send a negative shudder throughout the spirit. If we can have an honest estimate of ourselves before God, humility is a gracious gift. Sober judgement is advantageous.
Thinking more highly of anything projects negative worth on ability and effort. Pride gained from inflating the value of efforts serves naught. "Recognizing that we have succeeded in an effort need not be pride," as stated in the Life Application Study Bible Commentary.
This was a lesson learned for me over this past year, and I am very thankful there is peace in my heart about many efforts. Pride and achievement have been task-masters in the past. I have found that journaling the way an accomplishment 'feels' has been very beneficial. Then reading it out loud for the greatest impact to see how it sounds to others. Boastful? Arrogant? Self-importance? Superiority? Rewrite it if you must until these are settled, and peace returns because you are now gentle and humble in heart.