Passage
(and the life was manifested, and we have seen, and bear witness, and declare unto you the life, the eternal [life], which was with the Father, and was manifested unto us);
(and the life was manifested, and we have seen, and bear witness, and declare unto you the life, the eternal [life], which was with the Father, and was manifested unto us);
1 John 1:1 That which was from the beginning, that which we have heard, that which we have seen with our eyes, that which we beheld, and our hands handled, concerning the Word of life
1 John 1:2 (and the life was manifested, and we have seen, and bear witness, and declare unto you the life, the eternal [life], which was with the Father, and was manifested unto us);
1 John 1:3 that which we have seen and heard declare we unto you also, that ye also may have fellowship with us: yea, and our fellowship is with the Father, and with his Son Jesus Christ:
1 John 1:4 and these things we write, that our joy may be made full.
The verse centers on "life", "manifested", "seen", "bear", "witness", "declare", and "eternal". It is saying that the verse draws attention to "life" and "manifested", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 1's "That which was from the beginning that..." into verse 3's "that which we have seen and heard...", so "life" and "manifested" belong inside that flow. In 1 John context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "life" and "manifested" with trust shaped by these words, not by a vague optimism outside the passage.