Srimad Bhagavatam Canto 11, Chapter 09, Text 22

SB 11.9.22

yatra yatra mano dehi
 dharayet sakalam dhiya
snehad dvesad bhayad vapi
 yati tat-tat-svarupatam
If out of love, hate or fear an embodied soul fixes his mind with intelligence and complete concentration upon a particular bodily form, he will certainly attain the form that he is meditating upon.
From this verse it is not hard to understand that if one constantly meditates upon the Supreme Personality of Godhead, one will achieve a spiritual body just like that of the Lord. The word dhiya, “with intelligence,” indicates complete intellectual conviction in a particular understanding, and similarly the word sakalam indicates one-pointed attention of the mind. With such complete absorption of consciousness, surely one will attain in the next life a form exactly like that upon which one was meditating. This is another example learned from the insect kingdom, as explained in the following verse.
Srimad Bhagavatam Canto 11, Chapter 09, Text 21
Srimad Bhagavatam Canto 11, Chapter 09, Text 23