Always try to chant the holy name and don't be weak. This is also the teaching of Sri Caitanya Mahaprabhu. You should remember and meditate, three times daily, on the diksa mantras given to you by your Gurudeva: guru-mantra, guru-gayatri, gaura-mantra, gaura-gayatri, krsna-mantra, kama-gayatri, panca-tattva mantra, and hari-nama. Never think they are useless. Like Krsna, they are very powerful...