Passage
In Him was life, and the life was the Light of men.
In Him was life, and the life was the Light of men.
John 1:2 He was in the beginning with God.
John 1:3 All things came into being through Him, and apart from Him nothing came into being that has come into being.
John 1:4 In Him was life, and the life was the Light of men.
John 1:5 And the Light shines in the darkness, and the darkness did not overtake it.
John 1:6 There was a man having been sent from God, whose name was John.
The verse centers on "light" and "life". It is saying that the verse draws attention to "light" and "life", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 3's "All things came into being through Him..." into verse 5's "And the Light shines in the darkness...", so "light" and "life" belong inside that flow. In John context, the local focus is the identity of Jesus, new birth, eternal life, and belief and unbelief.
A plain takeaway is to answer the verse's own emphasis on "light" and "life" with trust shaped by these words, not by a vague optimism outside the passage.