The drawback of always thinking of Sensei

"The prophecies of the Thus Come One recorded in the scripture, when viewed in the light of the Buddha’s true intentions, never contain the slightest falsehood with regard to either secular or religious matters. Now, in the Lotus Sutra it is stated, “After I have passed into extinction, [one] should accept and uphold this sutra. Such a person assuredly and without doubt will attain the Buddha way.” It also says, “This way one will quickly attain the unsurpassed Buddha way.” 

Nichiren goes on to say, "Ah, how assuring! How assuring! If we continue to think in this way, then, though we may be exiles, we have cause to be joyful in both body and mind!" Always thinking of Sensei takes away from always thinking of the Gohonzon and the Lotus Sutra and experiencing the true joy of the Buddhist faith."