Vaishnava Samhita. Meera Charitam I. Vol II Book VI Chp 12 Shloka 3

जीवाः कृष्णपराधीना न स्वतन्त्राः कदाचन |
स्वभावः कृष्णदास्यञ्च तेषां सर्वसुखावहम्  ||  

All living beings are under the sovereignty of Shri Krishna. They never enjoy absolute freedom. It is the natural duty of all souls to engage in the service of Shri Krishna, which bestows upon them all good.