A well-formed illumined thought can be seen as a spark of light. Sparks or movements of light indicate the play of forces in the consciousness or around it.
The psychic if it gets hold of them (physical mind and the vital physical) can change completely their will and outlook and orientation and open them to the true perception of things and right impulse. The mind and higher vital can help much towards that.
To turn all actions automatically into worship cannot be done by thought control only; there must be a strong aspiration in the heart which will bring about some realisation or feeling of the presence of the One to whom worship is offered. The bhakta does not rely on his own effort alone, but on the grace and power of the Divine whom he adores.
To do anything by mental control is always difficult, when what is attempted runs contrary to the trend of human nature or of the personal nature. A strong will patiently and perseveringly turned towards its object can effect a change, but usually it takes a long time and the success at the beginning may be only partial and chequered by many failures.