Lenin believed that a socialist revolution could succeed in russia if

a group of dedicated working class took control of the government

explanation:

Lenin saw in Russia the great need for socialism. The Russian poor were been oppressed and peasants suffered great hardship in the hands of capitalist.

The people got tired of these conditions leading to uprisings and Lenin showed them that capitalism was the cause of the problems they faced.

Lenin's first step in taking over power was replacing the capitalist government with the working class government. And these working class would lead the laboring peasants in building socialism.