Have all devotees already practiced yoga, jnana, tapa and all such processes for transcendence?

From Promila Mataji:
It’s said in Srimad Bhagavatam that those who take to bhakti in their current lives have already performed karma, jnana, dhayana etc in their past lives. In this case, our concentration levels should be really high. However, we find ourselves roaming around during japa not only physically but mentally too. We can neither sit at one place for the entire japa cycle, nor can we concentrate on each syllable which Srila Prabhupada has recommended.
Please could you enlighten us to resolve the apparent contradiction between what is said in the scripture and how we are in this “reality”?