The mind does not get naturally attached (attracted) to God. If it is natural to get attached, it is siddhi (perfection) and siddhi is obtained by doing sadhana.
First apply it, apply it, apply it (make repeated effort to focus on God), then one day it will start getting attached to God. The more it gets attached, the same percentage (that your mind is attached or God) your mind will be under your control. Accurately calculated.
And when the mind gets attached 100 percent to God:
‘मामेकं शरणं व्रज’ (mām ekaṁ śharaṇaṁ vraj)
Gita: 18/66‘मय्येव मन आधत्स्व’ (mayyev man ādhatsva)
Gita: 12/8 The word ‘only’ has been used: ‘तमेव शरणं गच्छ’ (tamev śharaṇaṁ gachchh) Gita: 18/62. Only when the mind gets attached 100% to God, it will be 100 percent under your control. This is the automatic consequence.
Therefore, sadhana will have to be done. Only through Bhagavad-bhakti (devotion to God), the mind will be under your control.
Remember this always.
