If somehow or other anyone develops their dormant love of God—love of god is present there in everyone, just like fire is there in the unlit match, covered-over—if Krishna becomes the Supreme Adorable Objectality, the Supreme Friend, the Supreme Master, the Supreme Lover—then, oh, he shall never again become disappointed or unhappy. Rather, because his loving propensity is rightfully placed,
- mac-citta mad-gata-prana, bodhayantah parasparam
- kathayantas ca mam nityam, tusyanti ca ramanti ca,
- (BG 10.9)
the devotee, one whose life is surrendered to Krishna, is always enjoying "great satisfaction and bliss" and he is constantly "enlightened", always positive, not negative as you say. The advanced devotee is the friend of everyone: yoga-yukto visuddhatma, purified soul engaged in loving devotional service to Krishna, sarvabhutatmabhutatma, he is dear to everyone and everyone is dear to him; and in another place Krishna claims that: yo mad bhakta sa me priya, that His devotee who is very dear to Him, advesta sarva-bhutanam, maitah karuna eva ca, is not envious but is the kind friend to all living entities.