Measuring Whether It Is Humility or Depression
To measur whether it is humility or depression, check whether you are advancing spiritually or going down.
Devotee’s Desire
Devotee wants to be completely controlled by Krishna. In being conquered by Krishna, our love awakens and in that state Krishna is conqured. You can not conquer till you are conquered.
Spiritual Advancement
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.
Loyalty and Faithfulness
Loyalty and faithfulness is foundation of a disciple's character and sadhana should be harmonized with this.