The feeling of discontentment
The almost all time present in us feelings of discontentment and that something is missing in order to feel well or happy, is a emotional-mental disease of the mind created by desire and rajas guna.
Their elimination involves the elimination of lust and desire for pleasures, fame, etc.(since it is the desire -among many other things- that causes these emotions) and the elimination of likes and dislikes.
He who is free from desire, attachments, likes-dislikes, fear and anger, the 'me and the 'mine experiences the plenitude, the peace and bliss of the Spirit.
Although mortal lives as God!