When we truly desire to become more humble, we become painfully aware of how often our actions are motivated by the desire to impress others.
Humility is practical application of knowledge.
To measur whether it is humility or depression, check whether you are advancing spiritually or going down.
The more one makes spiritual advancement, one feels humble and as one's devotion is superficial that much he feels that he is a great devotee.
Theoretical knowledge can not touch heart without Humility
Substance of Bhakti is Surrender and Humility.