Premanand Maharaj Ji
How can I chant the name and still work or study with focus?
Focused work, name in between, offer the hours
Work or study with full concentration, say "Radha" now and then, and offer the hours to Bhagwan afterwards. This keeps the work of reaching Bhagwan going alongside earning.
Do office work with concentration. Say Radha in between, and the hours of office work you did, offer them to the Lord.